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
1113/01
SCIENCE
Paper 1
October 2019
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 14 printed pages and 2 blank pages.
IB19 10_1113_01/3RP
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1
The diagram shows a human stomach.
muscles
blood vessels
and digestive
cells in the
stomach lining
(a) Which term best describes the stomach?
Circle the correct answer.
cell
organ
organism
system
tissue
Use information from the diagram to explain your answer.
[2]
(b) Red blood cells and muscle cells are found in the wall of the stomach.
(i) Explain how the structure of a red blood cell is related to its function.
[2]
(ii) Explain how the structure of a muscle cell is related to its function.
[2]
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2
Look at the diagram.
It shows a sealed bottle containing air particles.
air particle
(a) The air exerts a pressure on the sides of the bottle.
Explain how air exerts a pressure.
Use ideas about particles in your answer.
[1]
(b) The bottle is heated.
What happens to the pressure inside the bottle?
Explain your answer.
Use ideas about particles.
[2]
(c) A bottle of perfume is left in a room.
The top is taken off the bottle.
The smell of the perfume eventually fills the room.
What is the name of this process?
Circle the correct answer.
condensation
conduction
diffusion
melting
[1]
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3
Chen looks at different sound traces with an oscilloscope.
A
B
Describe what is happening to the sound from A to B.
Choose words from
decreases
increases
stays the same
The pitch of the sound ...................................................................... .
The frequency of the sound ....................................................................... .
The volume of the sound ...................................................................... .
The amplitude of the sound .................................................................... .
[4]
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4
This question is about completing a key to identify these four arthropods.
bee
ant
centipede
millipede
not to scale
(a) Look at the key.
The statements for boxes A, B and C are missing.
Use the diagrams to complete A, B and C.
arthropods
A ................................................
................................................
................................................
yes
no
B ................................................
C ................................................
................................................
................................................
................................................
................................................
yes
bee
no
yes
ant
centipede
no
millipede
[3]
(b) Spiders also belong to the arthropod group.
Give one feature which separates a spider from the other four arthropods.
[1]
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5
Blessy investigates the reactions of the element carbon.
Blessy uses a Bunsen burner to heat carbon.
She lets the carbon burn in air.
She then puts the burning carbon into a jar of oxygen.
The diagram shows the apparatus Blessy uses.
jar of oxygen
burning
carbon
Universal Indicator
solution
(a) Carbon is an element.
What is the chemical symbol for carbon? ..........................................
[1]
(b) The carbon reacts with the oxygen to make a gas.
(i) What is the name of this gas?
Circle the correct answer.
carbon carbonate
carbon dioxide
carbon hydroxide
carbon sulfate
[1]
(ii) The gas turns Universal Indicator solution orange.
Suggest a pH value for the solution.
pH .....................................
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6
The diagram shows a black scabbard fish from the Atlantic Ocean.
This fish is adapted to live in very deep water where there is very little light.
(a) Describe how this fish is adapted to live where there is very little light.
[1]
(b) The black scabbard fish is a fast moving predator.
(i) Suggest how the colour of this fish helps to make it a successful predator.
[1]
(ii) Describe two other adaptations that suggest that this fish is a fast moving predator.
1
2
[2]
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7
Angelique finds information about the stopping distance of cars.
The stopping distance is the distance a car moves after the driver wants to stop the car.
32 km/h
6 metres 6 metres
48 km/h
9 metres
14 metres
64 km/h
12 metres
24 metres
80 km/h
15 metres
38 metres
96 km/h
18 metres
55 metres
112 km/h
75 metres
21 metres
speed
braking distance
thinking distance
Angelique calculates the stopping distance for a car with a speed of 32 km/h.
Here is her calculation.
6 m + 6 m = 12 m
(a) Calculate the stopping distance for a car with a speed of 112 km/h.
stopping distance =
m
[1]
(b) Describe the pattern in the information for thinking distance.
Complete the sentence.
As the speed increases by 16 km/h the thinking distance
[2]
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(c) Predict what the thinking distance will be at 128 km/h.
m
[1]
(d) The speed of the car doubles from 32 km/h to 64 km/h.
Answer the questions choosing words from
decreases
doubles
halves
more than doubles
more than halves
What happens to the thinking distance from 32 km/h to 64 km/h?
What happens to the braking distance from 32 km/h to 64 km/h?
What happens to the stopping distance from 32 km/h to 64 km/h?
[2]
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8
Safia investigates the rusting of iron.
She puts iron nails into three different test-tubes.
Each test-tube contains different conditions.
The test-tubes are then left for one week.
The diagram shows the test-tubes after one week.
A
B
C
damp air
oil
dry air
iron nail
iron nail
iron nail
water
boiled
water
rust
chemical used
to remove water
(a) The iron nail in tube A rusts.
This is because the nail reacts with water and a gas found in air.
What is the name of the gas?
[1]
(b) Complete the sentences about the investigation.
The iron nail in tube B did not rust because
The iron nail in tube C did not rust because
[2]
(c) Rusting is a reaction that is not useful.
Explain why rusting is not a useful reaction.
[1]
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9
Pierre makes an electromagnet.
iron nail
cell
coil of
insulated wire
switch
Pierre wants to make a stronger electromagnet.
What does he do?
Circle the two correct answers.
add another cell
add another switch
add more coils to the insulated wire
change the iron nail to a wooden pencil
remove the iron nail
remove the switch
turn the cell around
[2]
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10 Look at the diagram of a human skeleton.
(a) Name the tissue which makes up the skeleton.
[1]
(b) Give two functions of the skeleton.
1
2
[2]
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11 Jamila investigates the reaction of different metals with hydrochloric acid.
The metals are magnesium, zinc and iron.
She measures how long it takes for the reaction with each metal to make 50 cm3 of hydrogen gas.
(a) She thinks these variables are important in her investigation.
A the metal used
B the volume of hydrochloric acid used
C the concentration of the hydrochloric acid used
D the time to make 50 cm3 of hydrogen gas
E the temperature of the room
Which letter shows the variable Jamila changes?
Which letters show the three variables Jamila keeps the same?
,
and
Which letter shows the variable Jamila measures to find out which metal reacts the fastest?
[4]
(b) Jamila predicts that hydrochloric acid will react fastest with zinc.
Look at her results.
metal
time to make 50 cm3 of gas
in seconds
magnesium
50
iron
280
zinc
200
Is Jamila’s prediction correct?
Explain your answer.
[2]
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12 (a) Class 9 have a quiz about our solar system.
Complete the answers.
Solar System Quiz
1.
Mercury, Earth and Mars are three of the inner planets of our solar system.
What is the name of the other inner planet?
…………………………………………………………………………………………………...
2.
The most distant planet from Earth was Pluto.
Pluto has now been classified as a dwarf planet instead of a planet.
What is the name of the most distant planet from Earth?
…………………………………………………………………………………………………...
3.
What is the name of the object that all the planets in our solar system orbit?
…………………………………………………………………………………………………....
[2]
(b) Class 9 look at a photograph of the night sky.
lines
A camera normally lets light into it for a second.
The camera that took this photograph let light into it for 30 minutes.
What objects in the night sky make the lines on the photograph?
Explain why they look like lines.
[2]
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BLANK PAGE
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BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
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
1113/02
SCIENCE
Paper 2
October 2019
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 15 printed pages and 1 blank page.
IB19 10_1113_02/5RP
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2
1
The diagram shows the process of photosynthesis in a leaf of a plant.
Complete the diagram.
Choose words from the list.
carbon dioxide
glucose
minerals
nitrogen
sunlight
water
energy from ................................................
uses ...................................................... from the air
takes in ..............................................
through the roots
photosynthesis
makes ..........................................
[2]
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2
Sedimentary rocks are formed in layers.
Look at the diagram of layers of sedimentary rocks.
A
fossil
B
C
D
E
not to scale
(a) Which layer has the youngest fossils?
[1]
(b) Metamorphic rocks do not normally contain fossils.
Tick () the box next to the correct explanation.
Animals did not live in areas where metamorphic rocks were formed.
Metamorphic rocks are formed when molten rock cools.
Metamorphic rocks were formed before there was life on Earth.
Metamorphic rocks were formed under high temperatures and pressures.
[1]
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3
Carlos calculates the density of an object.
(a) The object has a mass of 450 g.
The object has a volume of 50 cm3.
Calculate the density of the object.
g / cm3
density
[3]
(b) Carlos knows the densities of different metals.
10
9
8
7
6
5
density
in g / cm3
4
3
2
1
0
aluminium
copper
iron
magnesium sodium
Carlos has a piece of each of the five metals.
Each piece of metal has the same volume.
Which piece of metal has the greatest mass?
Circle the correct answer.
aluminium
copper
iron
magnesium
sodium
[1]
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4
Jamila does an experiment with light.
She does the experiment in a dark room.
Here is the apparatus she uses.
white
light
red
filter
green
filter
screen
What does she see on the screen?
Explain your answer.
[3]
5
This question is about physical changes during adolescence.
Complete the table by describing one physical change that occurs during adolescence



only in males
only in females
in both males and females.
example of a physical change during adolescence
only in males
………...……………………………………………………………………………
only in females
………...……………………………………………………………………………
in both males and females
………...……………………………………………………………………………
[3]
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6
A class of 20 students measure their body temperatures.
The thermometer shows the body temperature of student number 20.
36
35
38
37
40
39
42
41
°C
(a) The table shows the results for 19 of the students.
The result for student 20 is missing.
What is the body temperature of this student?
Write your answer in the table.
student
1
2
3
4
5
6
7
8
9
10
temperature
inC
36.9
37.1
37.0
37.1
36.9
37.0
37.1
37.0
37.2
37.1
student
11
12
13
14
15
16
17
18
19
20
temperature
inC
37.0
36.9
37.0
37.2
36.9
37.0
37.1
37.3
37.0
……...
[1]
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(b) Complete the tally box for all 20 students by counting the number of students at each
temperature.
Some of the rows have been done for you.
temperature
in C
tally
number of students
at this temperature
37.0
IIII II
7
37.1
IIII
5
37.2
II
2
37.3
I
1
36.6
36.7
36.8
36.9
[2]
(c) Use the grid to present the results from the completed tally box in part (b).
[3]
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7
The diagram shows part of the structure of an atom of helium.
neutrons
Z
(a) There are three types of particle in an atom.
This diagram shows only two of the types of particle.
(i) Name the particles labelled Z.
[1]
(ii) Name the particles that are missing from the diagram.
Draw on the diagram the correct position and number of the missing particles.
[2]
(b) The diagram shows the group of the Periodic Table that contains helium.
The elements are in the same order as they appear in the Periodic Table.
helium
neon
argon
krypton
xenon
radon
(i) Which element in the group has the largest atomic number?
[1]
(ii) Describe how the radius of the atom changes as you go down the group.
[1]
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8
Light is reflected from different surfaces.
rough surface
smooth surface
(a) What is the law of reflection?
Complete the sentence.
The angle of reflection equals the angle of ....................................................................... . [1]
(b) The reflections on rough and smooth surfaces are different.
Write down one difference.
[1]
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9
Many plants depend on insects such as bees for reproduction.
(a) Look at the diagram of a pollen grain viewed with a microscope.
(i) Name the part of a flower that makes pollen grains.
[1]
(ii) This pollen grain is adapted to be carried by insects.
Use the diagram to suggest how it is adapted.
[1]
(b) The following diagram shows the same pollen grain after it has landed on the stigma of a
flower.
Explain what is happening to the pollen grain and why this is necessary for reproduction to
be completed.
What is happening to the pollen grain?
Why is this necessary?
[2]
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10 Mia investigates three types of soil, A, B and C.
She wants to find out how much water each soil can hold.
She adds 20 cm3 of water to the same volume of each soil.
She collects the water that comes through in a measuring cylinder.
soil A
soil B
soil C
Look at the results of Mia’s investigation.
(a) Match the letter of the soil to the correct name of the soil.
letter
name of soil
A
clay soil
B
loam soil
C
sandy soil
[2]
(b) Loam soil contains small pieces of decaying plants.
What name describes these pieces of decaying plants?
Choose from the list.
deposits
humus
sediment
top soil
[1]
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11 The diagram shows how a room can be heated.
The arrows show the direction of air movement.
B
A
heater
Use the diagram to complete the sentences.
At A warm air rises because it is ................................................... .
At B cool air sinks because it is ..................................................... .
This process is called .................................................................... .
[3]
12 Pierre reacts metal compounds with acids to make three different salts.
The table shows the metal compounds and the salts he makes.
Complete the table to show the acids he uses in each reaction.
metal compound
acid
salt formed
calcium carbonate
calcium nitrate
sodium hydroxide
sodium sulfate
potassium hydroxide
potassium chloride
[2]
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13 Birds can live in cold places.
They trap air between their feathers.
Why does this help to keep the birds warm?
Circle the correct answer.
trapped air is a good conductor
trapped air is a good convector
trapped air is a good insulator
trapped air is a good radiator
[1]
14 A group of students are doing field work near to their school.
They choose the correct apparatus for some activities.
Draw lines to match each piece of apparatus to the activity.
apparatus
cup
activity
net
collecting ground
dwelling animals
which are active and
hunt at night
pitfall
trap
sampling aquatic
insects living in
a small stream
sampling the plants
growing in an area of
grassland
quadrat
frame
[2]
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15 Aiko wants to measure different quantities in electrical circuits.
(a) She connects this electrical circuit.
A
Complete the sentences.
The circuit diagram shows a
circuit.
The component shown by A is
.
This component measures
.
[2]
(b) She connects this electrical circuit.
V
Complete the sentences.
The circuit diagram shows a
circuit.
The component shown by V is
.
This component measures the
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16 The diagram shows some of the metals in the reactivity series.
most reactive
potassium
sodium
calcium
aluminium
iron
tin
lead
copper
silver
gold
least reactive
(a) Iron reacts with dilute acid but not cold water.
Write down one metal that reacts with both dilute acid and cold water.
Choose your answer from the list in the diagram.
[1]
(b) Copper reacts with silver nitrate but not with lead nitrate.
Explain why.
[2]
(c) When copper reacts with silver nitrate two products are made.
Write down the names of these two products.
and
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BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
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publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
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
1113/01
SCIENCE
Paper 1
April 2018
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 16 printed pages.
IB18 05_1113_01/3RP
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2
1
Different cells have different functions.
Draw lines from the cell function to the correct type of cell.
Draw four lines only.
cell function
type of cell
absorbs water and
mineral salts
contracts to cause
movement
transports oxygen
around the body
uses light energy
to make food
[4]
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2
Draw a line from the type of energy to its description and example.
One has been done for you.
description
type of energy
example
also called
heat energy
chemical
a fire
also called
radiant energy
kinetic
a boy talking
energy of
moving objects
light
the Sun
energy released
by vibrating
objects
sound
a girl running
stored energy
thermal
food
[4]
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3
Mike investigates different rocks.
He uses different objects to try and scratch the surface of the rocks.
Mike records his observations in a table.
rock
is the rock scratched by
finger nail
copper coin
knife blade
steel file
A
yes
yes
yes
yes
B
no
no
yes
yes
C
no
no
no
no
D
no
no
no
yes
E
no
yes
yes
yes
(a) A rock can only be scratched by a substance that is harder than the rock.
Which rock is the softest?
Choose from A, B, C, D or E.
[1]
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(b) Mike finds this information about the hardness of rocks.
relative
hardness
scratch test
1
easily scratched by finger nail
2
scratched by finger nail
3
scratched by copper coin
4
easily scratched by knife blade
5
scratched by knife blade
6
scratched by steel file
7
scratches glass
8
scratches quartz
9
easily scratches quartz
10
cannot be scratched
Use the information to answer these questions.
(i) What is the relative hardness of rock E?
[1]
(ii) A rock can be scratched with a steel file.
This rock will not scratch glass.
What is the relative hardness of this rock?
[1]
(c) Rocks form in different ways.
Which type of rocks form when lava from a volcano cools down?
[1]
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4
The diagram shows part of the human respiratory system.
A
B
C
Name the structures labelled A, B and C.
Choose words from the list.
air sac
bronchus
diaphragm
lung
rib cage
trachea
A
B
C
[3]
5
There are many different types of chemical reaction.
Complete the sentences about types of reaction.
Choose words from the list.
burning
displacement
endothermic
exothermic
fermentation
neutralisation
(a) The reaction between an acid and an alkali is called .................................................. . [1]
(b) The reaction between iron and copper sulfate to form iron sulfate and copper is called
.................................................................................................................................... . [1]
(c) When baking powder reacts with vinegar the mixture gets colder.
This is because the reaction is ................................................................................... . [1]
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6
Yuri investigates light and coloured filters.
(a) He shines white light through a red filter and then a green filter.
red filter
green filter
white light
A
B
What is the colour of the light at A and at B?
A
B
[2]
(b) He shines white light through a blue filter and then a cyan filter.
blue filter
cyan filter
white light
A
B
What is the colour of the light at A and at B?
A
B
[2]
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8
7
The table shows the masses and heart rates of eight mammals.
mammals
whale
body mass
in grams
heart rate in
beats per minute
120 000 000
20
elephant
5 000 000
30
horse
1 200 000
44
human
90 000
60
monkey
5 000
192
cat
2 000
150
rabbit
1 000
205
60
450
hamster
(a) (i) Describe the general pattern shown by these results.
[1]
(ii) Which mammal does not follow this general pattern?
Explain your answer.
[2]
(iii) Suggest a better way of presenting the data so that the pattern is more obvious.
[1]
(b) Jamila finds this information on the internet.
A chicken with a body mass of 1500 g has a heart rate of 275 beats per minute.
The information for the chicken does not fit with the general pattern for mammals.
Suggest why.
[1]
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8
Mia collects three liquids found in her kitchen.
coffee
tea
cleaning fluid
Mia then makes this statement about the substances.
The three liquids
are acids.
(a) Mia’s friend Carlos tells her she has no evidence for her statement.
Why is it important to have evidence to back up a scientific statement?
[1]
(b) Describe how Mia uses an indicator to collect evidence for her statement.
Include the

name of the indicator

result she gets if the liquids are acids.
[2]
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9
Safia wants to find the density of a small ball.
(a) She measures the mass of a plastic cup containing ten identical balls.
plastic cup
ten balls
g
(i) The plastic cup has a mass of 2.5 g.
What is the mass of one ball?
g
[1]
(ii) Why does Safia use ten identical balls?
[1]
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(b) Safia measures the volume of the ten identical balls.
cm3
cm3
50
40
30
50
30
30
20
20
10
40
40
30
20
close-up view
10
close-up view
water and ten balls
water
Complete the measurements to find the volume of one ball.
cm3.
The volume of water in the measuring cylinder is
cm3.
The volume of the water and ten balls in the measuring cylinder is
The difference in volume between these two readings is
cm3.
cm3.
The volume of one ball is
[2]
(c) Calculate the density of a ball.
Use your answers for mass in part (a) and volume in part (b) to calculate the density.
density 
mass
volume
g/cm3
The density of the ball is
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10 The islands of Hawaii are home to around 40 species of birds called honeycreepers.
They have descended from an original species of honeycreeper which is now extinct.
Look at the diagram.
It shows five species of honeycreeper.
original honeycreeper
A
D
B
C
(a) (i) Which process causes the gradual change from one species to another?
[1]
(ii) Name the scientist who developed the theory to explain how this process could happen.
[1]
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(b) This key can be used to identify four species of honeycreeper.
honeycreeper
has long,
pointed beak
has short,
strong beak
upper beak
much longer
than lower beak
upper and lower
beaks both
similar size
Maui parrotbill
Nihoa
finch
beak slightly
curved
beak highly
curved
‘apapane
akiapolaau
Use the key to identify species A and species D.
species A
species D
[2]
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14
11 The diagram shows the atomic structure of aluminium.
(a) How many electrons are there in one atom of aluminium?
[1]
(b) Which scientist discovered the structure of the atom?
Circle the correct answer.
Darwin
Einstein
Pasteur
Rutherford
[1]
(c) In which group of the Periodic Table is aluminium found?
[1]
(d) Aluminium is used in the circuit boards and batteries of mobile phones.
Use ideas about properties to explain why.
[1]
(e) Aluminium burns in air to form a compound.
What is the name of this compound?
[1]
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12 The lizard loses thermal (heat) energy and gains thermal (heat) energy.
Complete the labels to show the energy transfers taking place.
Choose from the following words.
conduction
convection
radiation
[2]
thermal energy lost from surface of skin by
.......................................................................................... .
thermal energy gained from rock by
thermal energy lost by air movements by
........................................................... .
....................................................................................... .
13 Metal carbonates react with acids.
A salt and two other chemicals are made.
Name the two other chemicals made.
and
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14 Oliver investigates the effect of light on photosynthesis.
Oliver is given the apparatus shown.
gas
bubble
water
containing
carbon
dioxide
funnel
lamp
water plant
Write down two variables which Oliver needs to control during his investigation.
1
2
[2]
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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Cambridge Secondary 1 Checkpoint

1113/02
SCIENCE
Paper 2
April 2018
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 16 printed pages.
IB18 05_1113_02/2RP
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2
1
Pierre plays a sport called rugby.
To keep fit he eats a special diet and exercises often.
(a) To improve his strength, Pierre eats lots of chicken.
(i) Name the main nutrient present in chicken.
[1]
(ii) Explain how this nutrient improves Pierre’s strength.
[1]
(b) To prepare for a game of rugby, Pierre eats lots of starchy foods such as pasta.
Explain why it is important for Pierre to eat starchy food before a strenuous game of rugby.
[2]
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2
(a) Tick () the boxes next to the two correct sentences about gases.
Gases can flow to fill a container.


Gases only form at temperatures above 100 C.


The particles in a gas are arranged randomly.


The particles in a gas are close together.


The particles in a gas can only vibrate.

[2]
(b) A gas changes into a liquid during condensation.
Describe what happens to the particles in a substance during condensation.
[2]
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4
3
Gabriella makes a sound.
She looks at the trace it makes on an oscilloscope.
A
She makes four different sounds and looks at their traces.
B
C
D
E
A
Complete the sentences.
Choose from the following letters.
B
C
D
E
The sound with a higher pitch than A is .............................. .
The sound with a larger volume (louder) than A is .............................
The sound with a smaller frequency than A is ............................
The sound with a smaller amplitude than A is .............................
[4]
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4
The drawing shows a mammal called the Philippine tarsier.
Tarsiers live in rainforests, jumping from tree to tree.
They rarely touch the ground.
They sleep during the day and hunt for insects at night.
(a) Use the drawing to suggest three ways tarsiers are adapted to their habitat.
1
2
3
[3]
(b) Philippine tarsiers are an endangered species.
Tourists have to pay to photograph these tarsiers in special nature reserves.
Suggest two ways this can help to increase the number of these tarsiers in the wild.
1
2
[2]
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5
Yuri investigates the reaction of metals with acids.
He adds different metals to dilute hydrochloric acid.
The diagram shows his results.
metal A
metal B
metal C
metal D
(a) Complete the column heading and table to show Yuri’s results.
metal
A
0
B
6
C
D
[2]
(b) Describe how Yuri could improve his method to find the volume of gas produced.
Tick () the box next to the correct method.
collect the gas in a measuring cylinder


collect the gas in a test tube


repeat the experiment the same way


use a smaller piece of metal

[1]
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(c) Yuri repeats his experiment using more concentrated acid.
Yuri makes this prediction.
If I use more concentrated
acid I will get a faster
reaction.
The diagram shows his results for his second experiment.
metal A
metal B
metal C
metal D
Is Yuri’s prediction supported by his results?
yes
no
Explain your answer.
[1]
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6
There are many objects in space.
(a) Which object is a source of light?
Circle the correct answer.
asteroid
Earth
Moon
planet
star
[1]
(b) Comets are not sources of light.
Explain how we can see a comet even though it is not a source of light.
[2]
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7
The dodo became extinct in the 17th century.

The dodo was a flightless bird which lived on the island of Mauritius.

The dodos built their nests on the ground.

Dodos had never met humans before humans arrived on the island. The dodos were not
afraid of the humans.

Humans brought new animals to the island, such as cats, dogs and rats.

The humans removed most of the forest where the dodos lived to build new homes and to
create farmland.
Write down two reasons why you think that the dodo became extinct.
1
2
[2]
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8
When lithium is added to water it forms lithium hydroxide and a gas.
(a) Complete the word equation for the reaction between lithium and water.
+
+
[3]
(b) The chemical symbol for lithium is Li.
The formula for water is H2O.
The formula for lithium hydroxide is LiOH.
Which of these substances is an element?
Choose from lithium, water or lithium hydroxide.
.........................................................................
Explain your answer.
[2]
(c) Lithium is in Group 1 of the Periodic Table.
The diagram shows some of the elements in Group 1 of the Periodic Table.
Na
K
sodium
potassium
Rb
rubidium
Cs
caesium
Fr
francium
Describe how the reactivity of the Group 1 metals changes as you go down the group.
[1]
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9
Blessy investigates conduction of thermal (heat) energy.
She heats a metal rod.
The metal rod has a pin attached with wax.
metal rod
pin attached
with wax
heat
When the end of the metal rod is hot, the wax melts and the pin falls.
Blessy must think about the safety hazards of this investigation.
Describe two of these safety hazards.
1
2
[2]
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10 Diagram A shows the flower of a fly orchid.
Diagram B shows a fly orchid flower being visited by insects.
A
B
(a) The flowers of this orchid release chemicals which smell like a female fly.
Suggest two reasons why male flies travel great distances to visit these flowers.
1
2
[2]
(b) The orchid is pollinated by insects.
What is meant by the term pollination?
[2]
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11 The diagram shows the structure of a boron atom.
= particle Y
= particle Z
Name particles Y and Z.
particle Y
particle Z
[2]
12 Rajiv puts a piece of wood on a pivot.
He adds weights at different distances from the pivot.
3m
piece of
wood
2m
pivot
A
4N
The wood balances.
Calculate the weight labelled A in the diagram.
Weight of A =
N
[2]
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14
13 Plants are able to use light energy to make their own food.
Name one substance that plants use to make their own food by this process.
[1]
14 Tick () the three correct properties of magnets.
Like poles of magnets repel.
Magnets always have N and S written on them.
Magnets do not work if they are in water.
Magnets attract iron, cobalt and nickel.
The force of attraction is greater at the poles than in the middle of the magnet.
[2]
15 Planets orbit the Sun.
Sun
Saturn
A
B
C
Write down the names of planets A, B and C.
A
B
C
[1]
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16 Priya connects an electrical circuit.
(a) What type of circuit is shown in the diagram?
Circle the correct answer.
parallel circuit with closed switch
series circuit with closed switch
parallel circuit with open switch
parallel and series circuit with open switch
series circuit with open switch
[1]
(b) Priya wants to measure the current in the circuit.
What is the name of the meter she uses to measure the current?
[1]
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16
17 Jamila is a skier.
Here are the time and distance measurements for three of Jamila’s journeys.
journey
time in
seconds
distance in
metres
A
30
40
B
60
120
C
60
30
Journey B has the greatest average speed.
Explain why.
[2]
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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

1113/01
SCIENCE
Paper 1
October 2018
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 19 printed pages and 1 blank page.
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2
1
Safia uses a microscope to look at cells.
She makes a labelled drawing of a cell.
vacuole
nucleus
X
cell membrane
cytoplasm
(a) Name the structure labelled X.
[1]
(b) Safia cannot be sure whether the cell is animal or plant.
Use the information from the diagram to explain why.
[2]
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2
The diagram shows a cross - section of rocks in three different locations.
location 1
location 2
location 3
layer A
layer B
layer C
layer D
metamorphic rock
(a) Fossils are found in the layers of rocks.
Look at the picture of one of the fossils.
(i) This fossil is the oldest shown in the diagram.
Explain how you can tell.
[1]
(ii) The fossil is found in a sedimentary rock.
Circle the sedimentary rock in the list.
basalt
granite
marble
sandstone
[1]
(b) Complete the sentence to explain how metamorphic rocks form.
Choose words from the list.
heat
ice
pressure
water
wind
Metamorphic rocks form when other rocks are changed by
and
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3
Ring magnets have a north pole (N) and a south pole (S).
N
S
Gabriella has a toy made of ring magnets.
She puts four ring magnets on the toy.
There are gaps between the magnets.
N
Complete the missing labels in the boxes on the diagram.
Use N for a north pole.
Use S for a south pole.
The first one has been done for you.
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5
4
Oliver grows several different varieties of cucumber plants.
He produces new plants by breeding different varieties together.
Oliver uses a brush to transfer grains containing male cells from a flower of one variety to the
female parts of another variety.
This is shown in the diagram.
female part
of flower
male part
of flower
(a) Name the grains containing the male cells.
[1]
(b) Name the process of transferring the grains to the female parts of a flower.
[1]
(c) Name the process that must take place before seeds are formed.
[1]
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5
Chen investigates displacement reactions.
(a) Chen adds iron to copper sulfate solution in a test-tube.
A reaction takes place.
Copper and iron sulfate are made.
Complete the word equation for this reaction.
+
+
[2]
(b) Chen repeats his method with some other metals and metal salt solutions.
Here are his results.
metal
metal salt solution
does it react?
copper
zinc sulfate
no
copper
iron sulfate
no
iron
copper sulfate
yes
iron
zinc sulfate
no
zinc
copper sulfate
yes
zinc
iron sulfate
yes
Put these metals in order of reactivity, starting with the most reactive.
copper
iron
zinc
most reactive
least reactive
[1]
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(c) Chen notices the test-tube gets warm when a reaction takes place.
What name describes a reaction that gives out heat?
[1]
(d) Chen's teacher suggests that he change his experiment to find out which reaction gives out
the most heat.
Describe how Chen changes his experiment.
[2]
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6
Sound waves can be shown on an oscilloscope.
A
B
Complete the sentences.
Choose words from the list.
amplitude
frequency
noise
particle
At A the wave has the highest
.
At A and B the wave has the same
.
size
[2]
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7
Angélique and Pierre watch a film about penguins.
One scene shows penguins together in a group at a temperature of –30 C.
Pierre predicts that the penguins in the middle of the group will be the warmest.
Angélique suggests that they plan an investigation to test Pierre’s prediction.
They decide to use test-tubes filled with hot water to represent eight penguins.
She labels one tube A and stands it on its own.
She labels another tube B and places it in the middle of six other tubes all labelled C.
Angélique fills the eight test-tubes with hot water.
tube B
tube C
tube A
Angélique and Pierre record the temperatures of the water in tubes A, B and C over a period of
time.
(a) Name two pieces of apparatus they use to obtain the measurements they need.
and
[2]
(b) State one variable they need to keep the same in their investigation.
variable
Explain your answer.
[2]
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8
Aiko and Carlos are investigating states of matter.
They do three tests on five different substances.
Test 1 Fill a syringe with the substance and try to squash it.
Test 2 Put the substance into a beaker.
Test 3 Heat the substance in an evaporating dish.
Here are their results.
substance
test 1
test 2
test 3
A
could not fill the
syringe with this
substance
did not take on the
shape of the beaker
melted
B
filled the syringe
but could not be
squashed
took on the shape of
the beaker
turned into steam
leaving nothing in
the dish
C
could not fill the
syringe with this
substance
did not take on the
shape of the beaker
burnt
D
could be
squashed in the
syringe
could not see this
substance in the
beaker
did not do this as
nothing to see
E
filled the syringe
but could not be
squashed
took on the shape of
the beaker
turned to steam but
left a white solid
behind in the dish
Use their results to answer these questions.
(a) Which substance is a gas?
Choose from A, B, C, D or E.
...............................
Explain your answer.
[2]
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(b) Which two substances are solids?
Choose from A, B, C, D and E.
and
Explain your answer.
[2]
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9
Pierre and Carlos have six boxes.
C
B
D
A
E
F
They collect information about the six boxes.
box
colour
volume
in cm3
mass
in g
density
in g/cm3
A
red
15
18.0
1.2
B
red
12
75.6
6.3
C
green
12
86.4
7.2
D
green
8
78.4
9.8
E
red
10
41.0
4.1
F
green
13
83.2
6.4
(a) Pierre says
‘The green boxes are denser than the red boxes.’
Does the evidence in the table support his statement?
Explain your answer.
[2]
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(b) Carlos says
‘The largest box is the most dense.’
Does the evidence in the table support his statement?
Explain your answer.
[2]
10 The diagram shows four giraffes.
They have different patterns on their bodies.
Tick () the boxes next to the two sentences that prove that they are all the same species.
They all eat the same food.
They can all breed with each other.
They share similar features.
They live in the same habitat.
Their offspring would all be able to have young.
[2]
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11 The diagram shows a model of an atom of an element.
nucleus
X
(a) Name the part of the atom labelled X.
[1]
(b) Describe how you can tell that the element is in Group 4 of the Periodic Table.
Use information from the diagram.
[1]
(c) What happens to the size of atoms as you move down Group 4?
[1]
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12 The diagram shows the addition of different colours of light.
yellow
green
red
blue
.............................................
.............................................
Complete the diagram by writing the correct colour in each box.
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13 (a) The diagram shows part of a food web in a large lake.
A ...................................................
B ...................................................
perch
sticklebacks
C ...................................................
D ...................................................
algae
Some organisms are missing from the food web and are shown by the boxes A, B, C and D.
Identify the four organisms using the information.
Algae are small green plants that are eaten by mosquito larvae.
Water fleas also feed on algae.
Sticklebacks are small fish that eat water fleas and mosquito larvae.
Fish such as perch and pike eat sticklebacks.
Pike and otters are predators that compete with each other for perch.
Write the names of each of the organisms in the boxes A, B, C and D.
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(b) In some areas, otters have been introduced into lakes and rivers.
Fishermen claim that this has affected the food web and spoiled their fishing.
Explain how and why introducing otters could affect the number of fish in the lake.
[2]
14 Jamila draws a picture of the Sun and the planets in the solar system.
Sun
She has labelled the Sun.
(a) Write down the names of the two planets nearest to the Sun.
and
[1]
(b) We see the Sun because it is a source of light.
Explain why we see the planets.
[1]
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15 Safia investigates electrical circuits.
She measures the voltage across a lamp.
test wire
V
Safia writes her results in a table.
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length of
test wire
in cm
voltage
in V
10
0.42
20
0.37
30
0.35
40
0.28
50
0.22
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(a)
Complete the graph of Safia’s results by

adding labels to both of the axes

plotting the points (the first three have been done for you).
0.5
X
0.4
X
X
0.3
0.2
0.1
0
0
10
20
30
40
50
60
[2]
(b) One of the results does not fit the pattern.
Which result is anomalous and what should Safia do to check this result?
anomalous result
she should
[2]
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BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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
1113/02
SCIENCE
Paper 2
October 2018
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 17 printed pages and 3 blank pages.
IB18 10_1113_02/4RP
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2
1
Draw a straight line from each function to the correct plant cell.
Draw only two lines.
function
plant cell
absorbs water and
minerals from soil
transports water and
minerals
[2]
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2
Reactions between metals and non-metals form compounds.
(a) Sulfur reacts with metals to form a type of compound called a sulfide.
Complete the table to show the type of compound formed by different non-metals.
One has been done for you.
non-metal
type of compound
chlorine
oxygen
sulfur
sulfide
[2]
(b) Iron reacts with a compound and oxygen to form rust.
What is the name of this compound?
[1]
3
Gabriella connects an electrical circuit.
A1
A4
A2
A3
There are two lamps and four ammeters in the circuit.
The lamps are identical.
The reading on A1 is 0.8 A.
What are the readings on the other ammeters?
A2 is
A.
A3 is
A.
A4 is
A.
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4
The diagram shows a frog.
Scientists classify animals with backbones into five main vertebrate groups.
Classify the frog into its correct vertebrate group.
Give one reason for your answer.
vertebrate group
reason
[2]
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5
Rajiv draws pictures of the stars in the night sky from his bedroom window.
He draws a picture in January.
He draws a picture in June.
(a) Write down one difference between the two pictures.
[1]
(b) Rajiv draws another picture in January of the next year.
Describe what the picture will look like.
[1]
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6
(a) (i) Name the process that plants use to make their own food.
[1]
(ii) Name one other product of this process.
[1]
(b) In an investigation, identical plants are placed in three different gases.

Each plant is given constant light.

The plants are kept in the same conditions for one week.
The diagram shows the results of this investigation.
at start
gas A
gas B
gas C
gas A
gas B
gas C
after one
week
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Describe the results of this investigation.
plant kept in gas A
plant kept in gas B
plant kept in gas C
[3]
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7
Carlos investigates the reaction of zinc with dilute sulfuric acid.
He puts zinc into a conical flask and then adds 25 cm3 of cold dilute sulfuric acid.
The diagram shows his apparatus.
10 20 30 40 50 60 70 80 90 100
gas syringe
zinc
dilute sulfuric acid
Carlos then records the volume of gas in the syringe each minute.
The diagrams below show some of his results.
10 20 30 40 50 60 70 80 90 100
10 20 30 40 50 60 70 80 90 100
1 minute
2 minutes
10 20 30 40 50 60 70 80 90 100
10 20 30 40 50 60 70 80 90 100
4 minutes
6 minutes
(a) Write down the volume of gas collected after 6 minutes.
cm3
[1]
(b) Carlos repeats the investigation using 25 cm3 of warm dilute sulfuric acid.
Predict the volume of gas collected after 2 minutes.
cm3
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(c) Carlos then repeats the investigation using 25 cm3 of more concentrated sulfuric acid.
Explain why the reaction is faster.
Use ideas about particles and collisions in your answer.
[2]
8
Yuri draws a picture to show the air particles in front of a loudspeaker.
air particles
loudspeaker
Write the letter C on the diagram where there is a compression of air particles.
Write the letter R on the diagram where there is a rarefaction of air particles.
[2]
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9
The picture shows a mountaineer climbing Mount Everest.
Mount Everest is nearly 9 km high.
The air pressure at the top of the mountain is very low. This makes breathing very difficult.
The mountaineer wears a tight fitting mask connected to a breathing apparatus.
A chemical in the breathing apparatus removes waste gas from his breath.
(a) Name the life process which provides the mountaineer with the energy for climbing.
[1]
(b) Which gas, found in the air, is needed for this process?
[1]
(c) Which waste gas needs to be removed from the mountaineer’s breath?
[1]
(d) Suggest why low air pressure at the top of mountains makes breathing more difficult.
[2]
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10 Youssef and Blessy investigate the reaction of metals with dilute hydrochloric acid.
They put 10 cm3 of hydrochloric acid into four test-tubes.
They then add 0.1g of a different metal to each test-tube.
Youssef and Blessy measure the time it takes for the metal to react completely.
This is the reaction time.
The table shows their results.
metal
reaction time
in s
calcium
15
iron
290
magnesium
23
zinc
230
(a) Put the metals in the table in order of reactivity.
most reactive
[1]
least reactive
(b) Write the word equation for the reaction between magnesium and hydrochloric acid.
+
+
[3]
(c) Youssef and Blessy wear safety glasses during the investigation.
Explain why.
[1]
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11 White light can be split into different colours by a glass prism.
white light
glass prism
(a) Write down the name given to this splitting of white light.
[1]
(b) The white light is split into seven different colours.
Complete the order of the seven colours.
red
yellow
blue
violet
[2]
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12 Substances are either elements, compounds or mixtures.
(a) Look at the list of substances.
carbon
copper
magnesium carbonate
sulfur
water
Sort the substances into compounds and elements.
One has been done for you.
compound
element
carbon
[2]
(b) Read these sentences about mixtures.
Tick () the box next to the correct sentence.
Mixtures are pure substances.
Mixtures can be separated by physical means.
Mixtures contain only elements.
Elements in mixtures are joined by chemical bonds.
[1]
(c) Magnesium carbonate reacts with an acid to make magnesium nitrate.
Which acid must be used in this reaction?
[1]
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13 Chen draws a diagram to show water changing from a liquid to water vapour.
water vapour
water molecules
liquid
Complete the sentences.
All the water molecules in the liquid are moving.
Some of the molecules have more .....................................................
These molecules move ...................................................... enough to escape the surface of the
liquid.
This is called .................................................. .
This makes the liquid become .................................... .
[4]
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14 The diagram shows a model of the human heart.
blood from
body
X
blood to
lungs
(a) Complete the table about the composition of the blood going to the lungs.
Tick () the two boxes that describe the correct composition of this blood.
concentration
of carbon dioxide
high
concentration
of oxygen
low
high
low
[1]
(b) The blood vessel labelled X carries blood away from the heart.
(i) What name is given to this type of blood vessel?
[1]
(ii) The blood vessel labelled X has very thick walls.
Explain why this is necessary.
[1]
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15 Blessy draws five different distance/time graphs on the same axes.
A
B
C
distance
from
Blessy
D
E
time
(a) The distance axis shows how far an object is away from Blessy.
Which graph shows an object moving towards Blessy?
Circle the correct answer.
A
B
C
D
E
[1]
(b) Describe what is happening to the speed of object B.
[1]
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16 Lily draws a diagram to explain the principle of moments.
d1
d2
F2
F1
Use the diagram to explain the principle of moments.
[2]
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www.cie.org.uk after the live examination series.
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1113/01
SCIENCE
Paper 1
April 2017
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 17 printed pages and 3 blank pages.
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1
Plants and animals contain cells.
(a) Complete the table.
Tick () if the structure is present.
The first one has been done for you.
structure
nucleus
plant cell
animal cell


cell wall
cytoplasm
cell membrane
vacuole
[2]
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(b) This is a diagram of a plant cell.
A
B
D
C
Draw a line from each letter to its correct name and function in the plant cell.
name
letter
function
cell wall
A
where photosynthesis
happens
chloroplast
B
where chemical
reactions occur
cytoplasm
C
contains genetic
information
nucleus
D
rigid to support
the cell
[4]
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2
This question is about the structure of the Earth.
(a) Draw straight lines to match the part of the Earth’s structure with its description.
Earth’s structure
description
core
centre of the Earth
crust
part made of liquid rock
mantle
outer part
[2]
(b) The Earth is made up of three different types of rock.
One type is sedimentary rock.
Write the names of the other two types of rock.
and
[2]
(c) Sedimentary rocks sometimes contain the remains of dead animals and plants.
What is the name of these remains found in rocks?
Tick () the correct box.
crystal
fossil
mineral
rock
[1]
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3
Here are six objects.
Each of these objects transfers energy into useful types of energy.
.................................................
.................................................
.................................................
.................................................
.................................................
.................................................
Write down the useful type of energy released below each object.
Choose the type of energy from
electrical
kinetic
light
sound
thermal
[3]
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4
Mia connects an electrical circuit.
+
–
A1
A5
A2
A3
A4
(a) What type of electrical circuit has Mia made?
[1]
(b) There are five components in the circuit with the letter A in a circle.
(i) Write down the name of this component.
[1]
(ii) What do these components measure?
[1]
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(c) Here is a picture of component A1.
5
10
0
A
15
20
What is the reading on component A1?
[1]
(d) Predict the reading on component A5.
[1]
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5
The diagram shows the human circulatory system.
Four organs are labelled A, B, C and D.
head and
arms
organ A
heart
organ B
organ C
organ D
legs
oxygenated blood
Diagram not to scale
deoxygenated blood
(a) Look at the diagram and name the four organs.
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(b) Some substances leave the blood and other substances enter the blood when it travels
through an organ.
Complete the table by writing the letters of the organs in the correct boxes.
how the blood changes as it passes through the organ
letter
The concentration of nutrients increases.
The concentration of carbon dioxide decreases and the
concentration of oxygen increases.
[2]
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6
A group of students investigate photosynthesis using pond weed.
The diagram shows the equipment they use.
cm3
gas
5
gas bubbles
10
thermometer
15
lamp
light
20
water
pond weed
(a) (i) Write down the word equation for photosynthesis.
+

+
[2]
(ii) The diagram shows the volume of gas they collect after 5 minutes.
Write down this volume.
[1]
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(b) The students want to increase the volume of gas the pond weed makes in 5 minutes.
(i) The students use a drinking straw to bubble some of their breath into the water.
The volume of gas the pond weed makes increases.
Explain why.
[1]
(ii) Suggest and explain one other way the students could increase the volume of gas this
pond weed makes in 5 minutes.
[2]
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7
Youssef investigates what happens when iron is added to different solutions.
He puts four different metal salt solutions into four beakers.
He then adds an iron nail to each beaker.
iron nail in
copper sulfate
solution
iron nail in
potassium nitrate
solution
iron nail in
lead nitrate
solution
iron nail in
silver nitrate
solution
After ten minutes Youssef records his observations.
metal salt solution
observation
copper sulfate
iron nail covered in a pink solid
potassium nitrate
no reaction
lead nitrate
iron nail covered with a black solid
silver nitrate
iron nail covered with a black solid
(a) Which variable does Youssef change in his investigation?
[1]
(b) Write down one variable Youssef needs to control.
[1]
(c) Youssef sets up another beaker.
This time he puts the nail in sodium chloride solution.
There is no reaction.
Explain why the nail in this beaker does not react.
[1]
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8
Carlos learns about the law of reflection in a lesson.
He draws a diagram.
Label his diagram.
Use the following words.
angle of incidence
angle of reflection
incident ray
mirror
normal
reflected ray
[3]
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9
This question is about the three states of matter.
(a) Which state of matter has the strongest forces between its particles?
[1]
(b) Draw straight lines to match the state of matter with the description of the spacing of the
particles.
state of matter
description
gas
spread far apart
liquid
closely packed in
a regular pattern
solid
closely packed
but not in a
pattern
[1]
(c) Youssef puts a small amount of water into a flat dish.
He then leaves the dish outside in the warm sunshine.
After a while the water disappears.
Explain what happens to the water particles.
[2]
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10 Look at the diagram. It shows some of the elements in the Periodic Table.
H
He
Li
B
Na
Al
K
C
O
F
Cl
transition elements
Use this Periodic Table to answer these questions.
(a) Write down the chemical symbol of the most reactive element in Group 1.
[1]
(b) An atom of an element has only one proton inside its nucleus.
Write down the chemical symbol for this element.
[1]
(c) Write down the chemical symbol of the element in Group 7 (Group 17) and Period 3.
[1]
(d) Write down the name of the element in the same group as boron.
[1]
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11 Priya and Lily investigate friction.
Here is the equipment they use.
masses
forcemeter
wooden block
pull
table
material
They pull the wooden block with a forcemeter.
They repeat the investigation using different materials.
(a) Priya says
“We must be careful because we are using heavy masses.”
Lily says
“We must make this investigation safe.”
Describe two things they can do to reduce the risk of hurting themselves or others.
1
2
[2]
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(b) Here are their results.
material A
has a read
in
g of 2.4 N
1.7 is the
reading
for mater
ial B
C is 3.2
0.7 belong
s to mater
ial D
Complete Priya and Lily’s results table.
forcemeter
reading
in N
[2]
(c) Describe how they can make the results more reliable.
[1]
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Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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
1113/02
SCIENCE
Paper 2
April 2017
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 14 printed pages and 2 blank pages.
IB17 05_1113_02/4RP
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2
1
Complete the sentence.
Choose from the list.
both the south pole and the north pole
neither pole
only the north pole
only the south pole
An iron nail is attracted to
2
of a magnet.
[1]
This question is about sound.
Tick () the correct sentence about the pitch of sound.
A high pitched sound is always loud.
A high pitched sound always has a high frequency.
A high pitched sound always has a large amplitude.
A high pitched sound always has a low frequency.
A high pitched sound must have a large wavelength.
[1]
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3
(a) Scientists classify arthropods into four main groups depending on their number of legs.
The diagrams show examples of three of these groups.
Draw straight lines to match each of the arthropods to its group.
arthropods
group
arachnid
3 pairs of legs
crustacean
insect
5 pairs of legs
myriapod
4 pairs of legs
[3]
(b) All arthropods have jointed legs.
Describe two other characteristics that would identify an arthropod.
1
2
[2]
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4
Here are some chemical formulas.
Al
CaO
Cl 2
CO2
KNO3
MgCO3
NaCl
P2O5
(a) Choose the formulas from the list.
Each formula can be used once, more than once or not at all.
(i) Write down the formulas of two elements.
[1]
and
(ii) Write down the formulas of all the compounds containing carbon.
[1]
(iii) Write down two formulas that show compounds made from three elements.
[1]
and
(iv) Fertilisers are often compounds of potassium.
Write down the formula for a fertiliser that is a compound of potassium.
[1]
(b) Write down the name of the compound with the formula CaO.
[1]
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5
Energy is always conserved.
Complete the energy diagrams to show that energy is conserved.
(a)
80 J of light energy
200 J of electrical energy
............. J of thermal energy
[1]
(b)
60 J of light energy
........... J of electrical energy
40 J of thermal energy
[1]
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6
The world human population needs increasing amounts of energy.
A large amount of energy is obtained by burning fuels.
(a) Look at the list.
Circle the fuel that is a renewable source of energy.
biomass
coal
gasoline (petrol)
natural gas
[1]
(b) Burning these fuels releases carbon dioxide into the environment.
(i) Describe some harmful effects of increasing levels of carbon dioxide on the environment.
[3]
(ii) Suggest which of these fuels would be the best to burn, if we must continue to burn fuel.
coal
gasoline (petrol)
hydrogen
wood
Explain your answer.
fuel
explanation
[1]
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7
Look at the table of elements in Group 7 (Group 17) of the modern Periodic Table.
element
atomic
mass
state at room
temperature
melting point
in °C
boiling point
in °C
fluorine
19
–220
–188
chlorine
35
gas
bromine
80
liquid
–7
59
iodine
127
solid
114
184
astatine
210
solid
301
337
–101
(a) Complete the sentence about the relationship between atomic mass and melting point.
As the atomic mass
the melting point
.
[1]
(b) What is the state of fluorine at room temperature?
[1]
(c) Estimate the boiling point of chlorine.
Choose from the list.
–201°C
–34°C
65°C
C
The boiling point of chlorine is
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138°C
[1]
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8
Jamila uses the internet.
She finds some information about adding coloured light together.
yellow
........................................
red
........................................
cyan
magenta
........................................
Write the correct colours of light in the three boxes on the diagram.
9
[2]
The scientist Copernicus was born in 1473.
At this time people thought that the Earth was the centre of the universe.
What did Copernicus think was the centre of the universe?
[1]
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10 Pierre grows pepper plants.
To find the effect of fertiliser on the growth of these pepper plants,

he sows three groups of 50 seeds

he places them in a glasshouse and waters one group with organic fertiliser, one with
artificial fertiliser and one with distilled water

he measures the average height of the pepper plants every 4 weeks

he counts how many peppers each group of plants have produced after 16 weeks.
The table shows the results of his investigation.
average height of pepper
plants in cm
treatment
number
of
peppers
after 16
weeks
4
weeks
8
weeks
12
weeks
distilled
water
38
70
98
46
organic
fertiliser
42
84
124
104
artificial
fertiliser
48
88
130
127
(a) (i) Which variable does Pierre change in his investigation?
[1]
(ii) State two variables Pierre must control in his investigation.
1
2
[2]
(iii) Suggest why Pierre waters one group of plants with distilled water.
[1]
(b) What conclusions can be made about the effects of adding fertiliser on
(i) the height of pepper plants?
[1]
(ii) the number of peppers the plants produced?
[1]
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11
Complete the table about the reactivity of metals.
metal
reaction with cold water
reaction with dilute
hydrochloric acid
violent reaction to form hydrogen
sodium
calcium
bubbles and gives hydrogen
iron
no reaction
no reaction
copper
no reaction
gold
[5]
12 Blessy puts two books on a table.
book B
book A
The books are the same size and the same mass.
Which book exerts the greater pressure on the table?
Explain your answer.
[1]
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13 Mike and Oliver sit on a see-saw.
Mike
500 N
Oliver
2m
1m
1000 N
pivot
Mike is smaller than Oliver but the see-saw balances.
Explain why it balances, using the principle of moments.
[3]
14 Mia investigates an endothermic reaction.
She adds sodium carbonate to dilute ethanoic acid.
(a) The temperature of the dilute ethanoic acid at the start is 20 °C.
What will happen to the temperature when the sodium carbonate is added?
[1]
(b) When sodium carbonate reacts with dilute ethanoic acid a salt is made.
A gas and a liquid are also made.
Which gas and liquid are made when carbonates react with acids?
gas
liquid
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15 The properties of sound can be explained using a diagram.
dots
loudspeaker
A
B
ear
(a) What do the dots represent?
Circle the correct answer.
air particles
heat particles
light particles
solid particles
sound particles
[1]
(b) Complete the sentences.
The particles in the diagram move.
Area A is called a compression because the particles are
Area B is called a rarefaction because the particles are
[2]
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16 Chen opens a bottle of liquid perfume.
After a few seconds he can smell the perfume.
Some of the liquid perfume evaporates into a gas.
The perfume gas then diffuses.
What happens to the particles of perfume during diffusion?
Tick () the correct box.
The particles have less energy.
The particles move closer together.
The particles move more slowly.
The particles spread out.
[1]
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14
17 Aiko draws a bar chart to show the mean (average) distance of planets from the Sun.
12
10
8
distance
from the Sun
in large
6
distance
units
4
2
0
A
B
C
D
E
F
planets
(a) Planet C is the Earth.
What are the names of planets A and B?
Planet A
Planet B
[1]
(b) What planet is between 8 and 12 large distance units from the Sun?
Choose from A, B, C, D, E or F.
[1]
(c) How many planets are less than 8.2 large distance units from the Sun?
Circle the correct answer.
3
4
5
6
7
[1]
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reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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
1113/01
SCIENCE
Paper 1
October 2017
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 16 printed pages.
IB17 10_1113_01/5RP
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2
1
Chloroplasts are found in plant cells but not in animal cells.
Other structures are found in both plant and animal cells.
(a) Complete the table by putting ticks () and crosses () in the correct column.
Chloroplast has been done for you.
structure
found in
plant cells
found in
animal cells


cell membrane
cell wall
chloroplast
cytoplasm
nucleus
vacuole
[2]
(b) Explain why plants need chloroplasts.
[2]
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2
Look at the diagram.
It shows the materials that make up different parts of a car.
electrical wires
made of copper
exhaust pipe made
from stainless steel
wheel hubs
made of aluminium
bumper (fender)
made from polymers
car body made
from mild steel
rubber tyres
filled with air
(a) Which two labelled parts of the car are made from non-metals?
[1]
and
(b) Which property of steel is useful for making the car body?
Circle the correct answer.
ductile
magnetic
sonorous
strong
[1]
(c) Which property of copper is useful for making the electrical wires?
Circle the correct answer.
ductile
magnetic
sonorous
strong
[1]
(d) What is an advantage of using stainless steel instead of iron?
[1]
(e) The windows are made of glass because glass is transparent.
What is meant by the word transparent?
[1]
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3
Yuri uses a flashlight.
green filter
flashlight
(torch)
light
yellow paper
Complete the sentences.
Choose from the following words.
You can use each word once, more than once, or not at all.
black
blue
green
red
white
The light from the flashlight contains three primary colours.
When these three primary colours are added together it makes
This light contains red light, green light and
light.
The yellow paper reflects the red light and
light.
The green filter only transmits
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light.
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4
The diagram shows a simple food web. It contains three food chains.
The letters A, B, C and D are the four different organisms making up these food chains.
A
B
C
D
(a) Which organism is a producer?
Choose from A, B, C or D.
[1]
(b) Which organism is both a primary and a secondary consumer?
Choose from A, B, C or D.
[1]
(c) What do the arrows in a food web show?
[1]
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5
Chen investigates the reaction of acids with metals.
He puts hydrochloric acid into four test-tubes.
Chen then adds a different metal powder to each tube.
The diagram shows his results.
tube 1
tube 2
tube 3
tube 4
10 cm3 of hydrochloric acid
and 1g of metal powder
Chen counts the bubbles formed in the reaction and records his results in a table.
tube
name of metal
1
iron
2
copper
3
zinc
4
tin
6
0
3
(a) Chen has missed one of the headings in the table.
Complete the table by writing in the missing heading.
[1]
(b) Chen has not recorded the result for zinc.
Complete the table by writing in the result for zinc.
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(c) Write down the metals in order of reactivity.
most reactive
least reactive
[1]
(d) The bubbles are made of a gas.
What is the name of the gas that forms when metals react with acids?
[1]
(e) Chen uses hydrochloric acid in his investigation.
What is the name of the salt formed when zinc reacts with hydrochloric acid?
[1]
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6
Angelique investigates heat transfer.
She heats a metal rod.
The metal rod has a pin attached with wax.
metal rod
pin attached
with wax
heat
When the end of the metal rod is hot, the wax melts and the pin falls.
(a) What type of heat transfer is Angelique investigating?
[1]
(b) Angelique repeats the investigation with rods made of different metals.
The pins fall after different amounts of time.
Why do the pins fall after different amounts of time?
[1]
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(c) Angelique draws a picture of the atoms inside one of the metal rods.
atoms
metal rod
heat
Describe how the heat is transferred to the end of the metal rod.
Use Angelique’s drawing to help you.
[2]
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7
Look at the diagram of a nitrogen atom.
electron
nucleus
(a) The protons are not shown on the diagram.
How many protons are in a nitrogen atom?
[1]
(b) Which group of the Periodic Table does nitrogen belong to?
[1]
(c) Write down the chemical symbol for nitrogen.
[1]
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8
Plants absorb mineral salts from the soil.
(a) Circle the cell that plants use to absorb mineral salts.
[1]
(b) Which other substance must plants absorb from the soil?
[1]
(c) Three identical plants A, B and C are grown in different conditions.
fruit
A
plant grown in
ideal conditions
B
plant grown in
identical conditions
to A but without
magnesium
C
plant grown in
identical conditions
to A but without
phosphate
(i) Describe the effects of phosphate on plant growth.
Explain how you can tell from the diagrams.
[3]
(ii) The plant grown without magnesium has yellow leaves.
Suggest why.
[1]
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9
Gabriella investigates the air content of different soils.
The diagram shows the apparatus she uses.
100 cm³ water
cm³
cm³
250
200
150
100
50
soil
250
200
150
100
50
water
soil and water
She puts 100 cm3 of soil into the measuring cylinder.
Gabriella then adds 100 cm3 of water to the soil.
She then records the total volume of soil and water in the measuring cylinder.
(a) The diagram below shows the total volume of soil and water for soil A.
cm³
170
160
soil and
water
150
Complete the table to show the total volume of soil and water for soil A.
soil
total volume of soil
and water in cm3
A
B
156
C
145
D
178
[1]
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(b) The water fills the air spaces in the soil.
The more air spaces, the lower the total volume of soil and water.
(i) Which soil has the most air spaces?
Choose from A, B, C, or D.
[1]
(ii) Clay soils are made of closely packed particles.
The air spaces are very small.
Which soil is clay?
Choose from A, B, C, or D.
[1]
(c) Clay is one type of soil.
Circle one other type of soil.
fossils
igneous
peat
rocky
[1]
(d) Gabriella also wants to investigate the acidity of each soil.
Which scale is used to measure the acidity of soil?
[1]
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10 Blessy has some cubes of material.
She wants to calculate the density of one of these cubes.
Blessy needs to measure two physical quantities.
One of these is the mass of the cube.
(a) Describe how she finds the mass of the cube.
[1]
(b) (i) What is the other physical quantity that Blessy needs to measure?
[1]
(ii) How does she find this physical quantity?
[2]
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11 Rabbits are herbivores and are adapted to survive in their environment.
They live in grassy places and make nests in underground tunnels.
(a) Look at the diagram.
The rabbits are able to detect the presence of predators such as foxes.
Write down one way shown in the picture in which rabbits are good at detecting predators.
[1]
(b) Rabbits make their nests in underground tunnels.
Suggest two reasons why.
1
2
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12 Class 9 have a quiz about current and voltage.
Their teacher gives them four questions.
Answer the questions on the quiz.
Quiz
1. What equipment is used to measure current?
........................................................................
2. What equipment is used to measure voltage?
........................................................................
3.
What is the unit of current?
……………………………………………………
4.
What is the unit of voltage?
……………………………………………………
[4]
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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
1113/02
SCIENCE
Paper 2
October 2017
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 20 printed pages.
IB17 10_1113_02/5RP
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1
Angelique and her friends are planning a party.
They want to prepare food that will be part of a healthy, balanced diet.
They find this information on the internet.
eat less
fat, oil, sugar, salt
dairy products, meat,
fish, eggs and beans
eat moderately
fruit and
vegetables
eat more
cereals and
whole grains
eat most
You should also drink 6-8 glasses of fluid (including water, weak tea and soup) every day.
(a) The information states that a person should eat mostly cereals and whole grains.
(i) Which group of nutrients is provided by cereals and whole grains?
[1]
(ii) Why do we need these nutrients?
[1]
(b) People are advised to eat more fruit and vegetables in their diet.
This helps to prevent them from developing deficiency diseases such as scurvy and rickets.
Name the group of nutrients which helps to prevent these deficiency diseases.
[1]
(c) Eating too much fat and oil can lead to health problems.
State one harmful result of eating too much fat and oil.
[1]
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2
This question is about states of matter.
(a) Complete these sentences about states of matter.
Choose words from the list.
be squashed
break
condense
expand
melt
separate
The particles in solids are close together which means solids cannot
When a liquid evaporates the particles
.
.
When a solid changes into a liquid it is said to
.
[3]
(b) The particles of a gas fill any container in which they are placed.
Explain why.
[2]
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3
Mia plays her flute.
flute
microphone
oscilloscope
The oscilloscope shows the sounds the flute makes.
Here is an oscilloscope picture.
height in cm
time in seconds
(a) There are two complete waves in the picture.
This wave has a frequency of 2 units.
The frequency of the wave increases to 6 units.
The amplitude stays the same.
(i) What is the number of complete waves that are now seen in the oscilloscope picture?
[1]
(ii) What happens to the height of the waves on the oscilloscope picture?
[1]
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(b) Mia moves further away from the microphone.
She plays the flute in exactly the same way.
Explain what happens to the oscilloscope picture.
[2]
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4
There are still many undiscovered species of animals and plants in remote parts of the world.
The diagram shows a newly discovered species which scientists have classified and named
Isothrix barbarabrownae.
(a) Name the class of vertebrates that includes Isothrix.
Circle the correct answer.
amphibians
birds
fish
mammals
reptiles
[1]
(b) Give two reasons for your answer to (a).
Use information from the diagram.
1
2
[2]
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5
Hassan is a farmer.
The soil on his fields is too acidic to grow some crops.
(a) Hassan wants to find out the pH of the soil.
He uses litmus.
(i) How does litmus tell Hassan that the soil is acidic?
[1]
(ii) Hassan’s friend suggests that he uses Universal Indicator instead of litmus.
Explain why.
[1]
(b) Hassan adds an alkali to the field.
The acid in the soil reacts with the alkali.
What is the name of this type of reaction?
Circle the correct answer.
evaporation
fertilisation
neutralisation
fossilisation
respiration
[1]
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6
Look at the pictures of stars seen from the same position on the surface of the Earth.
One of the pictures is from June and the other is from December.
June
December
(a) Why are the patterns of the stars different?
[1]
(b) A picture of stars is taken in October.
It is taken from the same position on the Earth.
What pattern will the stars have in the month of October?
Circle the correct answer.
same as the pattern in June
same as the pattern in December
a different pattern
[1]
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7
Rajiv and Jamila investigate photosynthesis.
They set up their apparatus as shown.
gas
bubble
water
containing dissolved
carbon dioxide
funnel
lamp
water plant
They want to find out how changing the distance of the lamp from the water plant affects the rate
of photosynthesis.
(a) Write down two variables that they measure.
1
2
[2]
(b) Rajiv and Jamila do their experiment.
Here are their results.
35
x
30
25
number of
bubbles
produced
in 5
minutes
x
20
x
15
10
x
5
0
x
0
10
20
30
40
50
60
distance of the lamp from the water plant in cm
Describe the pattern shown by the results.
[1]
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8
Safia and Carlos do some displacement reactions.
(a) The sentences A – D describe the method they use.
The sentences are in the wrong order.
A
They look to see if there is a reaction.
B
They place different metals into five test-tubes.
C
They add copper nitrate solution to each test-tube.
D
They repeat the method with different solutions.
Complete the boxes to show the correct order.
One box has been done for you.
B
[1]
(b) The table shows their results.
 = a reaction takes place
 = there is no reaction
metal
solution
zinc
iron
lead
magnesium
zinc nitrate




iron nitrate




lead nitrate




magnesium nitrate




Use the information in the table to put the metals into the order of reactivity.
most reactive
least reactive
[2]
(c) Complete the word equation for the reaction between zinc and lead nitrate.
zinc
+
lead
nitrate
+
[2]
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9
Jamila and Ahmed collect information about a camel and a horse.
camel
horse
weight = 5000 N
total area of feet = 2000 cm2
weight = 4000 N
total area of feet = 400 cm2
Pressure is calculated by the equation
pressure =
force
area
The total pressure exerted by the camel’s feet is 2.5 N / cm2.
Calculate the total pressure exerted by the horse’s feet.
pressure
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N / cm2 [2]
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10 Youssef investigates friction.
He drops marbles into different liquids.
marble
milk
olive
oil
honey
corn
syrup
(a) Youssef makes a prediction.
I predict that the honey
will have the most friction.
Here are his results.
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liquid
time taken for marble to fall
in seconds
milk
2.5
olive oil
3.1
honey
3.4
corn syrup
3.5
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Is Youssef’s prediction correct?
Circle the correct answer.
yes
no
Explain your answer using the results.
[2]
(b) Youssef wants to increase the time it takes for the marble to fall.
Describe how he could increase the time it takes for the marble to fall.
[1]
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11 Mike and Oliver find information about some planets.
name of planet
time to orbit the Sun
in (Earth) years
Earth
1.0
Jupiter
11.9
Mars
1.9
Mercury
0.2
Venus
0.7
(a) Which two of these planets take more time than the Earth to orbit the Sun?
[1]
and
(b) Oliver finds some information about the planets Saturn and Uranus.
name of planet
time to orbit the Sun
in (Earth) years
Saturn
84.0
Uranus
29.5
Mike says the information is incorrect.
What is wrong with this information?
Explain your answer.
[1]
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15
12 Different cells have different functions.
Draw a line from each cell to its function.
cell
function
absorbs water and
mineral ions from
the soil
transmits nerve
impulses around
the body
fertilises the egg cell
carries oxygen
around the body
[2]
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13 Look at the diagrams.
The diagrams show the particles in five substances.
The white and grey circles represent types of atom.
A
B
D
C
E
Which two diagrams show mixtures?
Choose from A, B, C, D and E.
and
Explain your answer.
[3]
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14 Forces are useful when playing different sports.
(a) Draw an arrow () from the tennis ball to show the direction of gravity.
[1]
(b) There is a force between the rugby ball and the boy’s hand.
Write down the name of this force.
[1]
(c) When the golf ball moves through the air a force slows it down.
Write down the name of this force.
[1]
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15 Look at the diagram.
It shows some different varieties of pigeon.
wild rock dove
pouter pigeon
fan-tailed pigeon
racing pigeon
(a) The four pigeons all have different colours.
Describe one other difference that you can see in the diagram between a wild rock dove
and a fan-tailed pigeon.
[1]
(b) Racing pigeons are specially bred for speed and stamina.
Describe one feature of the racing pigeon, shown in the diagram, that enables it to fly at high
speed.
[1]
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16 Piriya connects an electrical circuit.
+
–
A1
A5
A2
2Ω
A3
3Ω
A4
4Ω
The 2Ω, 3Ω and 4Ω components are resistors.
Complete the readings on the ammeters.
A1 = 1.8 amps
A2 = 0.8 amps
A3 = 0.6 amps
A4
amps
A5
amps
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17 Oliver investigates which variables affect the decay of leaves.
He puts some fallen leaves in three different types of soil.
The table shows the differences between the three different types of soil.
variables
type of soil
pH of soil
percentage of air
in soil
percentage of
water in soil
A
8
30
30
B
6
20
30
C
8
20
30
(a) Decomposers help to decay the leaves.
Name one type of microorganism which is a decomposer.
[1]
(b) Oliver finds that the leaves in soil C decay faster than those in soil B.
Suggest why.
[1]
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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Cambridge Secondary 1 Checkpoint

1113/01
SCIENCE
Paper 1
April 2016
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 14 printed pages and 2 blank pages.
IB16 05_1113_01/8RP
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1
The diagram shows four animals found living near a field of cabbage plants.
The animals all belong to the same food chain but are not in the correct order.
snake
slug
rook
toad
Read the following information to help you to work out the food chain.

Rooks have no predators and are the top carnivores in this food chain.

Slugs are herbivores and are the main prey of toads.

Cabbages are producers and make food for the food chain.

The energy for the food chain is provided by sunlight.

Snakes are predators of toads.
(a) Write the names of the organisms in the spaces in the correct order to finish the food chain.
sunlight
toad
[2]
(b) What is the number of trophic levels in this food chain?
[1]
(c) When organisms die, their bodies become food for decomposers.
Give an example of a decomposer and explain why decomposers are important.
example of a decomposer
why decomposers are important
[2]
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2
Look at the information about six different rocks.
rock
description of rock
how rock was formed
A
large crystals of different colours
liquid rock (magma) cooled slowly
underground
B
black with small crystals
liquid rock (lava) from an erupting
volcano cooled rapidly above ground
C
black with lots of thin layers
mudstone was changed by high
pressure
D
white hard solid
limestone was changed by heat and
high pressure
E
yellow and crumbles into sand
layers of sand were compressed
F
white and grey hard solid
chalk was changed by heat and high
pressure
(a) Rocks A and B both formed from cooling liquid rock.
(i) What type of rock are A and B?
[1]
(ii) The crystals in rock A are larger than in rock B.
Suggest a reason why.
[1]
(b) Which rock is a sedimentary rock?
Choose from C, D, E or F.
[1]
(c) Rock E contains the remains of organisms that lived millions of years ago.
What word is used to describe these remains?
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3
Look at the diagram of the Sun and the Earth.
Earth
Sun
NOT TO
SCALE
rotation
X
axis
(a) Write down the name of path X.
[1]
(b) The Earth turns on its own axis.
How many hours does it take the Earth to complete one rotation?
hours
[1]
.
[1]
(c) Complete the sentence.
Choose the best answer from the list.
an absorber of light
a reflector of light
a refractor of light
a source of light
The Sun is
(d) Complete the sentence.
Choose the best answer from the list.
absorbed by its surface
emitted by its surface
reflected by its surface
refracted by its surface
A planet is seen because light is
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4
This question is about the changes that take place during puberty and adolescence.
One of these changes in females is the growth of breasts.
(a) Describe one visible sign of puberty which occurs in both males and females.
[1]
(b) Look at the diagram.
It shows the reproductive system of a woman.
X
thick lining of uterus
(i) What is the name of the organ labelled X?
[1]
(ii) One function of organ X is to release chemicals which help to control fertility.
What is the other function of organ X?
[1]
(c) In the first part of the menstrual cycle the uterus produces a thick lining.
(i) What is the purpose of this lining?
[1]
(ii) What happens to this lining if an egg is not fertilised?
[1]
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5
Lily makes an electromagnet as shown.
iron rod
+
–
cell
coil of wire
(6 turns)
switch
paper clips
Lily uses the electromagnet to pick up paper clips.
(a) Lily predicts:
“Increasing the number of turns of wire around the iron rod will make it stronger.”
This prediction does not explain what is stronger.
Complete the sentence to explain what is stronger.
Increasing the number of turns of wire around the iron rod will make
[1]
(b) Lily does the investigation.
Look at her results.
number of turns
number of paper clips picked up
2
0
4
2
6
4
8
5
Is Lily’s prediction correct?
Explain your answer.
[1]
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(c) Lily wants to improve the investigation.
Describe what Lily could do to improve the investigation.
[1]
6
Safia investigates endothermic and exothermic reactions.
She mixes different chemicals together and records the temperature change.
(a) Complete her table of results by

calculating the change in temperature for water mixed with ammonium nitrate

writing either endothermic or exothermic in the last column.
chemicals being mixed
temperature
at start
in °C
temperature at
end
in °C
change in
temperature
in °C
ethanoic acid +
sodium carbonate
19
15
–4
hydrochloric acid +
sodium carbonate
19
water +
ammonium nitrate
19
endothermic or
exothermic
reaction
...........................
23
+4
...........................
14
...............................
...........................
[2]
(b) The reaction between hydrochloric acid and sodium carbonate is an example of
neutralisation.
This neutralisation reaction forms a salt, a gas and a colourless liquid.
Write down the names of the three products of this reaction.
1
2
3
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7
Oliver always beats Mike at computer games.
Oliver says that this is because his nervous system works faster than Mike’s.
They find a computer program which records how long it takes a person to press a key when the
screen changes colour.
They each do the test four times. Their results are shown in the table.
Oliver’s data in the table is incomplete.
time taken to press a key after the screen changes colour
in seconds
1st trial
2nd trial
3rd trial
4th trial
Mike
0.32
0.26
0.28
0.30
Oliver
0.30
0.26
0.26
0.42
total
average
time in
time in
seconds seconds
1.16
0.29
(a) (i) Calculate the total time Oliver took to do his four trials.
Write your answer in the table.
[1]
(ii) Use your result for (a)(i) to find Oliver’s average time for the four trials.
Write your answer in the table.
[1]
(iii) Do the results support Oliver’s idea that his nervous system works faster than Mike’s?
Give a reason for your answer.
[1]
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(b) Oliver says that his trials contain an anomalous result.
(i) Explain what Oliver means by an anomalous result.
Which of Oliver’s results is anomalous?
[2]
(ii) Suggest what Mike and Oliver should do to make their results more reliable.
[1]
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8
Look at the diagram of a beryllium atom.
(a) (i) How many electrons are in the atom?
[1]
(ii) How many neutrons are in the atom?
[1]
(b) Write down the chemical symbol for beryllium.
[1]
(c) Lithium is the third element in the Periodic Table.
Beryllium is the fourth element.
Lithium has fewer neutrons than beryllium.
Describe two other ways in which the structure of a lithium atom is different from a
beryllium atom.
1
2
[2]
(d) Which one of these scientists did research on the structure of an atom?
Circle the correct answer.
Darwin
Galileo
Newton
Rutherford
[1]
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9
Light is reflected by water.
The diagram shows some paths the ray of light may take.
A
C
B
air
water
E
D
(a) Which letter shows the reflected ray of light?
A
B
C
D
E
letter
[1]
(b) The law of reflection is about the angle of incidence (i) and the angle of reflection (r).
Circle the correct sentence.
i is always larger than r
i is always the same as r
r is always larger than i
r is sometimes larger than i
[1]
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10 Carlos does an experiment on pressure.
syringe B
syringe A
water
The two syringes are filled with water.
Syringe A has a cross-sectional area of 2 cm2.
Carlos pushes the plunger down with a force of 10 N.
Calculate the pressure in the syringe.
You should include your working and the units.
pressure =
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11 The diagram shows a leaf insect called a mantis.
Its body is bright green and it has two large eyes at the front of its head.
(a) A mantis is an insect.
Explain two ways you can tell this from the diagram.
1
2
[2]
(b) Scientists think that leaf insects evolved by a process called natural selection.
(i) Name the scientist who introduced the theory of natural selection.
[1]
(ii) Read these sentences about natural selection.
A
Advantageous features were passed to the next generation of insects.
B
Over generations some of the insects developed into a new species.
C
Some insects looked more like leaves than others.
D
The best adapted insects survived and reproduced.
Write the letters of the sentences in order so that they describe natural selection.
One has been done for you.
A
[2]
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12 Sound is made by a loudspeaker.
loudspeaker
air particles
ear
The air particles move.
(a) What does the loudspeaker do to make sound?
Complete the sentence.
Choose the best word from the list.
turns
twists
vibrates
The loudspeaker
waves
.
[1]
(b) The air particles move.
Complete the sentence.
Choose the best word from the list.
compression
reflection
When air particles are close together it is called a
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vibration
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BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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Cambridge Secondary 1 Checkpoint

1113/02
SCIENCE
Paper 2
April 2016
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 18 printed pages and 2 blank pages.
IB16 05_1113_02/8RP
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2
1
Chen investigates light and coloured filters.
He shines white light through a red filter and then a blue filter.
blue filter
red filter
white light
A
B
What is the colour of the light at A and at B?
A
[2]
B
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2
The drawing shows parts of a dandelion plant.
flower
seed
(a) Bees are attracted to dandelion flowers and they pollinate them.
(i) What attracts bees to dandelion flowers?
[1]
(ii) Explain what is meant by pollination.
[2]
(b) Dandelion seeds must be dispersed away from the parent plant.
(i) Why do seeds need to be dispersed away from the parent plant?
[1]
(ii) Use the information given in the drawing to suggest how these seeds are dispersed.
Give a reason for your answer.
method of dispersal
reason
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3
Mia makes a thermometer.
Look at the apparatus she uses.
glass tube
ruler
h
0
bung
boiling
tube
water mixed
with dye
(a) Mia measures the height, h, of the liquid in the glass tube.
Mia then places the boiling tube into a beaker of water and ice.
(i) What happens to the height of the liquid in the glass tube?
[1]
(ii) Describe how the movement and arrangement of water particles change as the water
gets colder.
[2]
(b) Mia decides to test her thermometer in boiling water.
(i) Describe one safety precaution she needs to take to prevent injury.
[1]
(ii) How does this safety precaution help prevent injury?
[1]
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4
Animals can hear sounds of different pitches.
(a) Complete the sentence.
Choose from the list.
amplitude
frequency
height
loudness
The pitch of a sound is also called its
vibration
.
[1]
(b) Hassan finds this information about animals from the internet.
It shows the range of hearing of different animals.
bat
owl
name of sheep
animal
tuna
cat
cow
increasing pitch
The cat has a large range of hearing.
Which animal has the smallest range of hearing?
Choose from the graph.
[1]
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5
Lily bought some fresh apples and lemons and placed them in a bowl near the kitchen window.
A few days later, Lily’s apples had turned brown and were smaller and shrivelled.
The lemons had green mould growing on them.
apple
mould
lemon
(a) Explain why the apples had become smaller and shrivelled.
[1]
(b) The mould grew from spores on the skin of the lemons.
Suggest where these spores came from and how they got onto the lemon.
[2]
(c) The apples and lemons in Lily’s fridge still looked fresh even though they were bought at the
same time.
Suggest two reasons why.
1
2
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Question 6 is on the next page
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6
This question is about liquids.
(a) When a liquid is put into a beaker it takes on the shape of the beaker.
Why do liquids take on the shape of the beaker?
Tick () the boxes next to two correct answers.
Liquids have no fixed shape.
Liquids have no fixed volume.
Liquid particles only vibrate.
The particles in a liquid expand.
The particles in a liquid move around.
[2]
(b) Pierre investigates the boiling point of water.

He heats up some pure water in a beaker until it boils.

Pierre measures the boiling point of the pure water.

He does this two more times using new samples of pure water.

Pierre then does this three more times using salt water.
The table shows some of his results.
type of water
boiling point in °C
pure water
100
100
salt water
102
103
100
(i) There is one result missing.
The thermometer shows Pierre’s missing result.
110
100
90
What is the temperature on the thermometer?
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(ii) What effect does adding salt have on the boiling point of water?
[1]
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7
Complete the sentences and answer the question about thermal (heat) energy.
Choose from the following words.
conduction
conductor
convection
evaporation
insulation
insulator
radiation
(a) The main form of thermal (heat) energy transfer in liquids and gases is called
.
[1]
(b) Thermal (heat) energy is transferred through a solid by
.
[1]
(c) Iron is a metal so it is a good
.
[1]
(d) What is the term for a poor conductor?
.
[1]
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8
The graph shows how smoking during pregnancy affects the birth mass of babies.
4.5
4.0
3.5
3.0
2.5
birth mass of
baby in kilograms 2.0
1.5
1.0
0.5
0
0
10
20
30
40
50
60
number of cigarettes smoked by a pregnant woman each day
(a) Complete the sentence.
As the number of cigarettes smoked each day during pregnancy increases, the birth mass
of a baby
.
[1]
(b) What advice would you give to a pregnant woman who smokes?
[1]
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9
Sodium is in Group 1 of the Periodic Table.
(a) Write down the chemical symbol for sodium.
[1]
(b) Sodium is a metal.
Tick () the boxes next to the two correct properties of sodium.
Sodium conducts electricity.
Sodium does not conduct heat.
Sodium has a low boiling point.
Sodium is ductile.
Sodium is not malleable.
[2]
(c) Sodium reacts with water. A gas is formed.
(i) Name the gas that is formed.
[1]
(ii) Potassium is another element in Group 1.
Potassium is below sodium in the Periodic Table.
Complete the sentence.
The rate of reaction of potassium with water is
the rate of reaction of sodium with water.
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10 Safia and Priya investigate friction.
Here is the equipment they use.
masses
forcemeter
wooden block
pull
table
material
They pull the wooden block with a forcemeter.
They repeat the investigation using different materials.
(a) What two measurements should they make?
[2]
(b) The materials they use have different surfaces.
Some of the materials are smoother.
Some of the materials are rougher.
(i) Predict what will happen when the smoother materials are used.
[1]
(ii) Explain your prediction.
[1]
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11 Look at the diagram of the reactivity series.
It shows some metals in order of reactivity.
most reactive
least reactive
potassium
sodium
calcium
magnesium
aluminium
zinc
iron
tin
lead
copper
silver
gold
platinum
Use the diagram to answer these questions.
(a) (i) Which three metals react with cold water?
1
2
3
[1]
(ii) Which gas is produced when metals react with acids?
[1]
(b) It is possible to predict if a displacement reaction will happen using the reactivity series.
Tick () two displacement reactions that will happen.
aluminium and silver nitrate
calcium and zinc sulfate
copper and sodium chloride
lead and iron nitrate
tin and magnesium chloride
[2]
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Question 12 is on the next page
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12 Ring magnets have a north pole (N) and a south pole (S).
N
S
Gabriella has a toy that uses ring magnets.
(a) She puts four of these ring magnets on the toy.
Explain why there are gaps between the magnets.
[2]
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(b) She puts the four ring magnets on the toy in a different way.
Explain why there are no gaps between the magnets.
[2]
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13 Snails move slowly.
(a) A snail moves 10 metres in 4 hours.
Calculate the average speed of this snail.
average speed
in metres per hour
[2]
(b) Another snail moves at a speed of 1.5 metres per hour.
Calculate the time it takes this snail to move 6 metres.
time
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Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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Cambridge Secondary 1 Checkpoint

1113/01
SCIENCE
Paper 1
October 2016
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 15 printed pages and 1 blank page.
IB16 10_1113_01/3RP
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1
There are seven characteristics of living things. These are called life processes.
In humans, different organs specialise in different life processes.
Draw a line from each organ to its life process.
One has been done for you.
organ
life process
excretion
intestine
growth
kidney
movement
muscle
nutrition
spinal cord
reproduction
uterus
respiration
sensitivity
[4]
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2
Carlos investigates soil.
He mixes a sample of soil with water in a measuring cylinder.
He then leaves the mixture to settle out into layers.
cm3
80
70
water
60
50
clay particles
40
30
silt particles
20
sand particles
10
gravel
(a) Which layer is made up of the largest particles?
[1]
(b) What is the volume of gravel in the soil sample?
cm3
[1]
(c) Which particles are smaller in size, clay or silt?
clay
silt
Explain how you can tell from the diagram of the measuring cylinder.
[1]
(d) Different types of soils have different amounts of sand, clay, gravel and silt particles.
These give the soils different properties.
Circle the correct words to complete the sentences about clay soils and sandy soils.
Sandy soils have fewer / more sand particles than clay soils.
Between the sand particles there are large / small air spaces.
Sandy soils are more / less likely to become waterlogged.
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3
Safia plays her flute.
flute
microphone
oscilloscope
The oscilloscope shows the sounds the flute makes.
Safia plays six different notes on her flute.
Here are six oscilloscope pictures.
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(a) Which sound is the loudest?
Circle the correct answer.
A
B
C
D
E
F
[1]
(b) Which sound has the greatest amplitude?
Circle the correct answer.
A
B
C
D
E
F
[1]
(c) Which sound has the highest pitch?
Circle the correct answer.
A
B
C
D
E
F
[1]
(d) Which sound has the highest frequency?
Circle the correct answer.
A
B
C
D
E
F
[1]
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4
Gabriella has brown hair and green eyes.
She plays the piano and speaks Italian and French.
Gabriella has inherited some of her features from her parents.
Gabriella’s mother is Italian and plays the violin. She has brown hair.
Gabriella’s father is French, plays the piano and has green eyes.
(a) Tick the boxes next to the features that Gabriella has inherited from her parents.
features
 = inherited from her parents
brown hair colour
green eye colour
her gender (female)
playing the piano
speaking French and Italian
[2]
(b) (i) Which part of a cell contains the information for inherited features?
[1]
(ii) Describe how this inherited information was passed on to Gabriella from her parents?
[2]
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5
Look at the diagram.
It shows some of the elements in the Periodic Table.
H
He
Be
B
C
N
O
F
Ne
Na Mg
Al
Si
P
S
Cl
Ar
Li
K
Ca
transition elements
(a) Use the Periodic Table to answer these questions.
(i) Write down the chemical symbol of the most reactive element in Group 7.
[1]
(ii) Write down the chemical symbol of the element with only three protons inside its
nucleus.
[1]
(iii) Write down the chemical symbol of the element in Group 2 and Period 3.
[1]
(b) Look at the diagram.
nucleus
Complete the diagram to show the arrangement of electrons in an atom of carbon.
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6
Hair dryers work by using energy transfers.
The picture shows the inside of a hair dryer.
Complete the labels to show the energy transfers.
Choose from
chemical
kinetic
elastic potential
nuclear
sound
The air inside the hair dryer
is hot. It has
electrical
thermal
The motor turns showing
it has
................................. energy.
........................... energy.
The air leaving the hair dryer
makes a noise. It has
The hair dryer is supplied
with
................................. energy.
........................... energy.
[2]
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7
Jamila uses an exercise bicycle to improve her fitness.
She measures her power and her heart rate as she cycles.
(a) Write down one other piece of data she could collect to measure her fitness.
[1]
(b) Read Jamila’s notes carefully.
I started with gentle exercise and measured my heart rate
in beats per minute.
My power was 70 watts and my heart rate was 80.
Then I pedalled faster, my heart rate reached 100 and my
power went to 120.
When my power was 170, my heart rate was 120.
I pedalled harder up to 220 watts and my heart rate was 140.
When I worked my hardest, the readings were 270 watts
and 160 beats per minute.
Draw a table to show Jamila’s results, including the correct units.
[3]
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8
Aiko and Mike want to make the salt copper sulfate.
They react copper oxide with an acid.
(a) (i) What is the name of the acid they use?
[1]
(ii) What type of reaction takes place?
Circle the correct reaction.
burning
condensation
fermentation
neutralisation
oxidation
[1]
(b) The sentences A–F describe the method they use.
They are in the wrong order.
A
The filtrate is left for several days for the crystals to grow.
B
The filtrate is heated until the first crystals appear.
C
The reaction mixture is filtered to remove the excess copper oxide.
D
Excess copper oxide is added to the acid.
E
The filtrate is put into an evaporating dish.
F
The reaction mixture is heated carefully for three minutes.
Fill in the boxes to show the correct order.
One box has been done for you.
E
[2]
(c) Look at sentence F.
Write down one safety precaution Aiko and Mike should obey.
[1]
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9
Yuri investigates the time it takes for different sized parachutes to fall to the ground.
He records his results in a table
area of
parachute in cm2
time for parachute to fall to the ground in seconds
test 1
test 2
test 3
50
1.7
1.5
2.8
113
3.0
3.6
3.3
201
6.2
6.3
6.7
314
9.5
9.9
10.0
(a) Calculate the average (mean) time for the parachute with the largest area.
average (mean) time =
seconds
[1]
(b) There is one anomalous result in the table.
Circle the anomalous result.
[1]
(c) What do the data tell Yuri about the relationship between the area of the parachute and the
air resistance?
[1]
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10 The diagrams show four different fruits and four methods of dispersal.
(a) Draw straight lines to match each fruit to its correct method of dispersal.
fruit
method of dispersal
animal dispersal
explosive self-dispersal
water dispersal
wind dispersal
[3]
(b) Give a reason why plants need to disperse their fruits and seeds.
[1]
11 Hydrated oxide of iron (rust) forms when iron and steel are left exposed outside.
Which two other chemicals are required for iron and steel to rust?
and
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12 Look at the diagram of the Sun and eight planets.
Sun
A
C
B
D
H
G
F
E
NOT TO SCALE
(a) Planet C is the Earth.
There are two planets with a smaller orbit than the Earth.
Write down the letters of these two planets.
and
[1]
(b) What are the names of planets A, D and F?
A
D
[1]
F
(c) Complete the sentence.
Choose the letter from the list.
A
B
C
D
E
The planet that takes the shortest time to orbit the Sun is
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G
H
.
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13 (a) Here is some information about objects in the universe.
name
type of object
Sirius
star
Earth
planet
Venus
planet
Pallas
asteroid
Canopus
star
is it a source of light?
Complete the table by writing yes or no.
[2]
(b) We can see the Moon.
Complete the sentence.
The Moon can be seen from the Earth because light from the Sun is
.
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14 There are two different types of energy sources.
(a) One type of energy source cannot be replaced once it is used up.
What is the name of this type of energy source?
[1]
(b) Circle the two energy sources from the list that cannot be replaced once they are used up.
biomass
coal
crude oil (petroleum)
geothermal
solar
wind
[1]
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BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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Cambridge International Examinations
Cambridge Secondary 1 Checkpoint

1113/02
SCIENCE
Paper 2
October 2016
45 minutes
Candidates answer on the Question Paper.
Additional Materials:
Pen
Pencil
Ruler
Calculator
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
You should show all your working in the booklet.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
The total number of marks for this paper is 50.
This document consists of 14 printed pages and 2 blank pages.
IB16 10_1113_02/4RP
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1
Here is a food chain from the Atlantic Ocean.
algae
zooplankton
(small animals)
shrimp
cod
(a) How many trophic levels are there in this food chain?
[1]
(b) Explain why algae are called producers.
[1]
(c) Humans have overfished the cod, causing their numbers to decrease.
What effect will this have on the numbers of the shrimp?
Explain why.
[2]
2
Gabriella investigates change of state.

She puts water into a beaker and heats it gently.

Every 2 minutes Gabriella records the temperature.
The graph shows her results.
120
100
80
temperature
in °C
60
40
20
0
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2
4
6
time in minutes
8
10
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(a) How many minutes does it take for the temperature of the water to reach 100 C?
minutes
[1]
(b) Complete the sentences to explain what is happening to the water particles between
8 and 10 minutes.
The water particles gain more
energy.
The particles move
.
This causes the particles to
out.
[3]
(c) The diagram shows the particles in liquid water.
Complete this diagram to show the particles in solid ice.
[2]
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3
Chen draws a diagram showing dispersion of light.
(a) He has not labelled the diagram.
Label the diagram using the following words.
light ray
light source
slit
prism
spectrum
...............................................
...............................................
}
...............................................
...............................................
...............................................
[2]
(b) The light from the light source is dispersed into the full colour spectrum.
What colour is the light from the light source?
Circle the correct answer.
blue
green
red
white
yellow
[1]
(c) Draw the letter X on the diagram to show where dispersion happens.
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4
The diagram shows a sandwich.
The sandwich consists of layers of meat, lettuce and butter placed between slices of bread.
(a) Draw a line from each food item in the sandwich to the main type of nutrient it contains.
food item
main type of
nutrient
meat
carbohydrate
bread
fat
lettuce
protein
butter
roughage (fibre)
[2]
(b) The sandwich provides many of the ingredients of a balanced diet.
What is meant by the term balanced diet?
[2]
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5
Angelique and Pierre investigate the rate of reaction between hydrochloric acid and
calcium carbonate.
The diagram shows the apparatus they use.
gas syringe
hydrochloric
acid
calcium carbonate
 They add 1 g of calcium carbonate to 25 cm3 of hydrochloric acid.
 They measure the volume of gas collected in 2 minutes.
 They then repeat the method using different concentrations of acid.
The table shows their results.
relative
concentration
of acid
volume of gas
collected in
cm3
1
6.2
2
11.8
3
19.3
4
27.1
5
32.7
(a) As the concentration of the acid increases the rate of reaction increases.
(i) Explain how the results show this?
[1]
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(ii) Explain why the rate of reaction increases as the concentration of acid increases.
Use ideas about particles and collisions in your answer.
[2]
(b) Angelique tells Pierre that the results are not reliable.
How could they make the results more reliable?
[1]
6
Oliver keeps some drinks in a refrigerator.
He measures the time it takes the drinks to warm up to room temperature.
He wants to find out how the volume of a drink affects this time.
He thinks the following variables are important in his investigation.
A – temperature of the cold drink in the refrigerator
B – room temperature
C – volume of drink
D – type of drink
E – time taken for cold drink to warm up to room temperature
Write down the letters of the variables to answer each question.
(a) Which variable will Oliver change? ……………
[1]
(b) Which two variables must Oliver measure? …………… and ……………
[2]
(c) Which three variables should Oliver keep the same?
…………… and …………… and ……………
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7
Scientists have found evidence which shows that smoking tobacco increases the risk of
developing serious diseases.
(a) The graph shows the percentage of people who smoked cigarettes between 1974 and 2006.
60
50
percentage
of people
40
who smoked
cigarettes
key
30
20
1974
all
1982
1990
1998
women
men
2006
years
Describe two patterns shown by the data.
1
2
[2]
(b) Smoking cigarettes increases the risk of getting lung cancer.
Doctors predict that there will be fewer cases of lung cancer in the future.
Use information from the graph in part (a) to suggest a reason for this prediction.
[1]
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8
Look at the diagram of a reactivity series.
most reactive
potassium
calcium
aluminium
zinc
iron
tin
lead
copper
silver
gold
least reactive
Use the diagram and your scientific knowledge to answer these questions.
(a) Some of the metals will displace other metals from their compounds.
Tick () the boxes next to two displacement reactions that happen.
aluminium and copper chloride
copper and potassium chloride
gold and silver nitrate
lead and copper chloride
tin and zinc chloride
[2]
(b) (i) Which gas is produced when a metal reacts with acid?
[1]
(ii) Heat is released when a metal reacts with acid.
What name describes a reaction that releases heat energy?
[1]
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9
Magnets have a North pole (N) and a South pole (S).
(a) Draw one arrow (
) on each magnet to show the direction of the force.
The arrows for the top two magnets have been done for you.
S
N
S
N
N
S
N
S
S
N
N
S
N
S
S
N
[2]
(b) There are magnetic field patterns around a bar magnet.
The diagram shows one magnetic field line.
(i) Draw an arrow on the field line to show the direction of the magnetic field.
N
S
[1]
(ii) Draw another two field lines with arrows on the diagram.
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11
10 The Earth is about 150 million kilometres away from the Sun.
Mars is 227 million kilometres away from the Sun.
This will affect how much food could be made by photosynthesis on Mars.
Suggest why food production on Mars could be affected.
Explain your answer
[2]
11 Look at the diagrams.
The white circles show one type of atom and the grey circles show another type of atom.
A
B
C
D
E
Which diagram A, B, C, D or E, shows
(a) a mixture of two elements?
[1]
(b) a pure compound?
[1]
(c) one element made up of molecules?
[1]
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12 Ahmed and Mike sit at opposite ends of a see-saw.
Ahmed
Mike
3m
3m
400 N
400 N
pivot
(a) The see-saw is balanced.
Explain why.
[1]
(b) Ahmed moves closer to the pivot.
Ahmed
Mike
3m
1.5 m
400 N
400 N
pivot
Describe what happens to the see-saw.
[1]
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(c) Mike also moves closer to the pivot.
Ahmed
Mike
1.5 m
1.5 m
400 N
400 N
pivot
Describe what happens to the see-saw.
[1]
(d) Mike now moves as close to the pivot as possible.
Ahmed
Mike
1.5 m
400 N
pivot
400 N
Describe what happens to the see-saw.
[1]
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13 Animals can be classified into different groups.
Complete the table.
Choose from the following groups.
amphibian
animal picture
arthropod
bird
name
mammal
reptile
group
snake
[1]
(a)
........................................
tarantula
[1]
(b)
........................................
wolf
[1]
(c)
........................................
frog
[1]
(d)
........................................
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Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at
www.cie.org.uk after the live examination series.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
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
SCIENCE
1113/01
Paper 1
April 2020
45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
 Answer all questions.
 Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
 Write your name, centre number and candidate number in the boxes at the top of the page.
 Write your answer to each question in the space provided.
 Do not use an erasable pen or correction fluid.
 Do not write on any bar codes.
 You should show all your working in the booklet.
 You may use a calculator.
INFORMATION
 The total mark for this paper is 50.
 The number of marks for each question or part question is shown in brackets [ ].
This document has 20 pages. Blank pages are indicated.
IB20 05_1113_01/3RP
© UCLES 2020
[Turn over
2
1
The list contains the names of different parts of a cell.
cell membrane
cell wall
chloroplast
Complete the table by placing ticks () in the correct boxes.
where the part of the cell is found
part of a cell
only in animal
cells
only in plant
cells
in both animal
and plant cells
cell membrane
cell wall
chloroplast
[2]
2
This question is about the properties of metals.
(a) Draw straight lines to match the property of a metal with its correct use linked to that
property.
property of a metal
use
drill bit
sonorous
bridge across a river
strong
electrical wires
ductile
bell
hard
[2]
© UCLES 2020
1113/01/A/M/20
3
(b) Metals are used to make electrical wires because they conduct electricity.
plastic
metal
Write down two reasons why plastic is put around electrical wires.
1
2
[2]
(c) Read the sentences about the physical properties of metals.
Tick () the box next to the correct sentence.
All metals have low melting points.
Some metals are gases at room temperature.
All metals conduct heat.
All metals are brittle.
[1]
© UCLES 2020
1113/01/A/M/20
[Turn over
4
3
Blessy uses the internet to find out about our Solar System.
She finds a very old model of our Solar System.
Jupiter
Mercury
Mars
orbits
Earth
Moon
Venus
Sun
Saturn
Scientists thought that the Earth was at the centre.
The orbits in the old model show the other objects moving around the Earth.
(a) Scientists today know that the Earth is not at the centre of our Solar System.
What is at the centre of our Solar System?
[1]
(b) Write down two other things that are incorrect in the old model.
1
2
[2]
(c) Write down one thing that is correct in the old model.
[1]
© UCLES 2020
1113/01/A/M/20
5
4
This question is about blood vessels.
(a) Draw a straight line from each cross section of a blood vessel to the correct letter showing
where the blood vessel is found.
blood vessels
cross sections
of blood vessels
A
from heart
direction
of blood flow
B
C
to heart
[2]
(b) Name the types of blood vessel labelled A and C.
A
C
[2]
© UCLES 2020
1113/01/A/M/20
[Turn over
6
5
The picture shows three different elements and their state at room temperature.
solid iodine
liquid bromine
chlorine gas
(a) Which two of these elements flow easily at room temperature?
[1]
(b) What is the chemical symbol for chlorine?
[1]
(c) Chlorine gas fills the jar.
Explain why a gas fills a jar.
Tick () the box next to the correct explanation.
Forces between the particles push them apart.



The particles are free to move.
The particles can easily be squashed into a small space.
The particles increase in size to fill the space.




[1]
© UCLES 2020
1113/01/A/M/20
7
(d) Liquid bromine easily evaporates.
Explain what happens to the particles (molecules) when a liquid evaporates.
[2]
© UCLES 2020
1113/01/A/M/20
[Turn over
8
6
Mia investigates sound.
oscilloscope
loudspeaker
microphone
She makes a sound using a loudspeaker.
The sound is detected by the microphone.
(a) Describe how the sound travels from the loudspeaker to the microphone.
[2]
© UCLES 2020
1113/01/A/M/20
9
(b) Mia draws the wave she sees on the oscilloscope.
(i) She makes the sound louder.
Draw this wave on the oscilloscope.
[1]
(ii) She makes the sound a higher pitch.
Draw this wave on the oscilloscope.
[1]
© UCLES 2020
1113/01/A/M/20
[Turn over
10
7
This question is about the life cycle of a plant.
(a) These processes take place in the life cycle of a plant.
fertilisation
pollination
seed formation
seed germination
Put the processes in the order in which they occur in the life cycle of a plant.
One has been done for you.
seed
germination
....................
....................
....................
[1]
(b) The diagrams A and B show two different types of seed.
A
B
Suggest the method of dispersal for each type of seed.
Give a reason for each answer.
method of seed dispersal
reason
A
B
[2]
© UCLES 2020
1113/01/A/M/20
11
8
Look at the diagram of the structure of a lithium atom.
nucleus
(a) There are three electrons in a lithium atom.
(i) How many protons are there in a lithium atom?
[1]
(ii) How many neutrons are there in a lithium atom?
[1]
(b) A sodium atom contains 11 protons.
Draw the structure of a sodium atom.
[2]
© UCLES 2020
1113/01/A/M/20
[Turn over
12
9
Mike investigates the strength of magnets.
magnet
hand
paper clip
Mike

puts the magnet on top of his hand

puts the bottom of his hand onto 24 paper clips

lifts his hand up

counts how many paper clips have been attracted

repeats with different magnets.
Here are his results.
magnet
© UCLES 2020
number of paper clips
A
24
B
24
C
7
D
19
E
12
1113/01/A/M/20
13
(a)
Mike concludes that magnet A and magnet B are both strong.
He cannot conclude which of these two magnets is stronger.
(i) Explain why he cannot conclude which magnet, A or B, is stronger.
[1]
(ii) Describe what he could do to find out which magnet, A or B, is stronger.
[1]
(b) Pierre repeats Mike’s investigation.
Here are Pierre’s results.
magnet
number of paper clips
A
18
B
22
C
1
D
13
E
6
Pierre uses the same magnets as Mike.
Pierre uses the same paper clips as Mike.
The results are different.
(i) Describe one difference between the results.
[1]
(ii) Suggest why the results are different.
[1]
© UCLES 2020
1113/01/A/M/20
[Turn over
14
10 Egg white contains a protein.
An enzyme digests protein in the stomach.
Class 9 investigate how changing the pH affects the time it takes for the enzyme to digest egg
white.
The graph shows the results of their investigation.
10
9
8
7
6
time to
digest egg 5
white in
minutes 4
3
2
1
0
0
1
2
3
4
pH of mixture
5
6
(a) (i) Which pH has the shortest time of digestion?
pH
[1]
(ii) The class want to be certain that they have found the shortest time.
Describe two things the class does to be certain.
1
2
[2]
© UCLES 2020
1113/01/A/M/20
15
(b) (i) State one safety risk of using liquids with a very low pH.
[1]
(ii) Describe one way of reducing this safety risk.
[1]
(c) State one variable the students must control in this investigation.
[1]
© UCLES 2020
1113/01/A/M/20
[Turn over
16
11 Jamila and Ahmed investigate displacement reactions.
They put drops of different solutions into the dimples of a spotting tile.
They then add metals to each solution.
The diagram shows their experiment.
zinc magnesium copper
metal
metal
metal
iron
metal
dimple
zinc nitrate
solution
magnesium nitrate
solution
Key
copper nitrate
solution
empty dimple
iron nitrate
solution
dimple with
metal and solution
spotting tile
(a) Jamila and Ahmed look to see if a reaction takes place.
Suggest what they might see if a reaction takes place.
[1]
© UCLES 2020
1113/01/A/M/20
17
(b) They record their results in a table.
They put a


tick () if there is a reaction
cross (x) if there is no reaction.
Here are some of their results.
solution
metal
zinc
zinc nitrate
magnesium
copper
iron

x
x
magnesium nitrate
copper nitrate


iron nitrate



x
(i) Complete the table to predict the results for magnesium nitrate.
[1]
(ii) The reactivity series shows the metals in order of reactivity.
Which of the four metals is the lowest in the reactivity series?
[1]
© UCLES 2020
1113/01/A/M/20
[Turn over
18
12 Complete the light rays in the three diagrams.
(a)
reflection
mirror
normal
[1]
(b)
refraction
air
water
[1]
(c)
shadow formation
screen
light source
opaque
object
[2]
13 Complete the word equation for aerobic respiration.
glucose
+
....................
....................
....................
....................
+
....................
....................
[2]
© UCLES 2020
1113/01/A/M/20
19
BLANK PAGE
© UCLES 2020
1113/01/A/M/20
20
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2020
1113/01/A/M/20
Cambridge Lower Secondary Checkpoint

SCIENCE
1113/02
Paper 2
April 2020
45 minutes
You must answer on the question paper.
No additional materials are required.
INSTRUCTIONS
 Answer all questions.
 Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
 Write your name, centre number and candidate number in the boxes at the top of the page.
 Write your answer to each question in the space provided.
 Do not use an erasable pen or correction fluid.
 Do not write on any bar codes.
 You should show all your working in the booklet.
 You may use a calculator.
INFORMATION
 The total mark for this paper is 50.
 The number of marks for each question or part question is shown in brackets [ ].
This document has 20 pages. Blank pages are indicated.
IB20 05_1113_02/3RP
© UCLES 2020
[Turn over
2
1
A farmer breeds goats for their milk.
(a) The farmer uses selective breeding.
These are the steps he uses.
They are in the wrong order.
A
He breeds the female goat with a male goat.
B
He repeats the steps for several generations.
C
He chooses a female goat that produces a lot of milk.
D
He breeds the female offspring with a male goat.
E
He chooses a female offspring that also produces a lot of milk.
Put the steps in the correct order.
One has been done for you.
E
[2]
(b) The characteristic the farmer chooses in his female goats is producing lots of milk.
Suggest one other characteristic the farmer wants in his goats.
[1]
© UCLES 2020
1113/02/A/M/20
3
(c) Natural selection is the way new varieties of animals form in the wild.
Which scientist developed the idea of natural selection?
Circle the correct answer.
Copernicus
Darwin
Galileo
Pasteur
Rutherford
[1]
© UCLES 2020
1113/02/A/M/20
[Turn over
4
2
Aiko wants to increase the rate of reaction between sodium carbonate and dilute nitric acid.
(a) Match the way that she can do this to why it works.
Draw only two straight lines.
way
why it works
more crowded particles so more collisions
increase the
temperature of
nitric acid
particles have less energy so more collisions
particles move faster so more collisions
increase the
concentration of
nitric acid
has bigger particles so that there are more collisions
[2]
(b) Lumps of sodium carbonate react more slowly with dilute nitric acid than powdered sodium
carbonate.
Use ideas about collisions to explain why.
[2]
© UCLES 2020
1113/02/A/M/20
5
3
Chen and Yuri draw a distance / time graph for their journeys.
Chen
120
110
100
90
Yuri
80
70
distance
in metres
60
50
40
30
20
10
0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18
time in seconds
Use the distance / time graph to answer the questions.
(a) How many metres did Chen move in the first 8 seconds?
(b) How many seconds did Yuri stop moving during his journey?
m
s
[1]
[1]
(c) Average speed can be calculated from the graph.
(i) Complete the equation for average speed.
average speed =
[1]
(ii) Calculate Yuri’s average speed during the whole journey.
m/s
Yuri’s average speed
© UCLES 2020
1113/02/A/M/20
[2]
[Turn over
6
4
(a) Look at the picture of a camel.
Camels live in hot dry deserts.
They have many adaptations to help them survive.
Complete the table to explain how a camel’s adaptations help it survive.
The first one has been done for you.
adaptation
explanation
fat in hump only
so that the rest of the body has less insulation
large flat feet
………………………………………………………….
thick eyelashes
………………………………………………………….
does not
produce sweat
………………………………………………………….
[3]
(b) Animals that live in the cold have different adaptations.
Suggest two adaptations that help animals survive in the cold.
1
2
[2]
© UCLES 2020
1113/02/A/M/20
7
5
Mike makes a salt called magnesium sulfate.
He adds magnesium to dilute sulfuric acid.
magnesium
ribbon
o o oo
dilute
sulfuric acid
He keeps adding magnesium to the dilute sulfuric acid until no more hydrogen gas is given off.
Some unreacted magnesium is left in the magnesium sulfate solution.
(a) Describe how Mike separates the unreacted magnesium from the magnesium sulfate
solution.
[1]
(b) Describe how Mike makes a dry sample of magnesium sulfate from magnesium sulfate
solution.
[1]
(c) Write a word equation for the reaction between magnesium and sulfuric acid.
+
+
[2]
© UCLES 2020
1113/02/A/M/20
[Turn over
8
6
Lily and Angelique use the internet to find this information about evaporation.
Evaporation can happen when liquids are hot or cold.
Evaporation is related to the energy of molecules.
The rate of evaporation can change.
rate of
evaporation
rate of
evaporation
air pressure
energy of molecules
(a) What happens to the rate of evaporation when the air pressure increases?
[1]
(b) (i) What happens to the rate of evaporation when the energy of molecules increases?
[1]
(ii) Write down one way the energy of molecules could be increased.
[1]
© UCLES 2020
1113/02/A/M/20
9
7
Water and minerals move through flowering plants.
(a) Complete the sentences about how water and minerals move through a plant.
Choose parts of a plant from the list.
Each part can be used once, more than once or not at all.
palisade mesophyll
phloem
root hair
Water and minerals enter plants through the
xylem
cells.
The water and mineral solution is transported in the stems through
cells.
The solution reaches the
cells in the leaves and
is used for growth.
[3]
(b) Plants need water to make sugar.
Name two other things that plants need to make sugar.
and
[2]
© UCLES 2020
1113/02/A/M/20
[Turn over
10
8
The diagram shows different types of rocks and how they form.
volcanic
eruption
igneous
rock
magma
sediment
rock X
sedimentary rock
(a) Sedimentary rocks can be turned into rock X by heat and pressure.
What type of rock is X?
[1]
(b) Which layer of the Earth contains magma?
Circle the correct answer.
atmosphere
inner core
mantle
outer core
[1]
(c) Sedimentary rocks often contain the remains of dead animals and plants from millions of
years ago.
What word is used to describe these remains?
[1]
© UCLES 2020
1113/02/A/M/20
11
(d)
Different types of soil have different amounts of organic matter in them.
Which type of soil contains the most organic matter?
Circle the correct answer.
clay
loam
sandy
silt
[1]
© UCLES 2020
1113/02/A/M/20
[Turn over
12
9
Sound can be reflected in the same way as light.
Safia and Yuri investigate the relationship between the angle of incidence, x, and the angle of
reflection, y.
They use the apparatus in the diagram.
board
x
tube A
10
11 12 1
9
8
7 6 5
y
tube B
2
3
4
ticking clock
sound
meter
board
Yuri

puts the ticking clock next to tube A

puts the sound meter next to tube B

uses the same value for angle x

uses different values of angle y.
Safia writes down the sound level shown on the sound meter.
Complete the table about the variables.
variable to change
variables to control
variable to measure
1.
………………………….…………….......
1.
value for x
2.
………………………….…………….......
3.
………………………….…………….......
1.
………………………….…………….......
[4]
© UCLES 2020
1113/02/A/M/20
13
10 Look at the diagrams of cells.
cheek cell
red blood cells
nerve cell
(a) Describe one way the structure of a nerve cell is different to a cheek cell.
[1]
(b) The structure of a red blood cell is adapted for its function.
Explain how.
function
adaptation
[2]
© UCLES 2020
1113/02/A/M/20
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14
11 Mia investigates the temperature change during some reactions.
In each experiment Mia adds a solid to a liquid.
She measures the temperature of the liquid before and after adding the solid.
(a) Mia uses a measuring cylinder to measure the volume of liquid.
The diagram shows part of her measuring cylinder of liquid.
cm3
4
3
2
1
What is the volume of liquid in the measuring cylinder?
cm3
© UCLES 2020
[1]
1113/02/A/M/20
15
(b) Here are Mia’s results.
liquid
added
temperature
of
liquid
water
17
solid(s) added
temperature
of the liquid
after solid is
added
change in
temperature
copper sulfate
20
+3
is the reaction
exothermic
or
endothermic?
………….
water
17
copper
sulfate
solution
18
citric acid and sodium
hydrogencarbonate
14
zinc
22
………….
………….
………….
………….
(i) She does not include some important information in the headings of the table.
Which unit is missing from the headings?
[1]
(ii) Calculate the change in temperature for each experiment.
One has been done for you.
Write your answers in the table.
[1]
(iii) Complete the table by writing endothermic or exothermic in the last column.
© UCLES 2020
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[1]
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16
12 Some objects become electrically charged.
(a) Oliver draws a diagram of two charged objects.
plastic rod
– –
–
– – –
– –
+
+
–
+
+
+ +
+
cloth
+
+
Explain how the objects become charged.
[2]
(b) Complete the sentences.
Opposite charges
.
Like charges
.
© UCLES 2020
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[1]
17
(c) Oliver puts charged balloons next to each other.
A
B
C
D
Balloon A has a positive charge.
What are the charges on the other balloons?
A is positive.
B is
.
C is
.
D is
.
[1]
13 Diagrams are used to show how energy is transferred.
Lamps transfer energy.
electrical energy = 100 J
...................energy = 10 J
thermal energy = 90 J
Complete the diagram to show the type of energy that is 10 J.
© UCLES 2020
1113/02/A/M/20
[1]
18
BLANK PAGE
© UCLES 2020
1113/02/A/M/20
19
BLANK PAGE
© UCLES 2020
1113/02/A/M/20
20
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2020
1113/02/A/M/20
Cambridge Lower Secondary Checkpoint

SCIENCE
1113/01
Paper 1
October 2020
45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
• Write your name, centre number and candidate number in the boxes at the top of the page.
• Write your answer to each question in the space provided.
• Do not use an erasable pen or correction fluid.
• Do not write on any bar codes.
• You should show all your working in the booklet.
• You may use a calculator.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
This document has 20 pages. Blank pages are indicated.
IB20 10_1113_01/6RP
© UCLES 2020
[Turn over
2
1
Complete the crossword puzzle about cells.
1
2
3
4
5
Across
2 Which rigid structure surrounds a plant cell?
4 What is the name of a group of different tissues working together?
5 Which structure contains the genetic material in a cell?
Down
1 What is the name of the structure inside a cell where photosynthesis happens?
2 Where in a cell do most chemical reactions happen?
3 What is the name of a group of similar cells?
[4]
© UCLES 2020
1113/01/O/N/20
3
2
An oscilloscope displays sound waves.
(a) Draw a line to match each display to the correct change.
display
change
decrease in
frequency
decrease in
loudness
increase in
amplitude
increase in
pitch
[3]
(b) Tick () the correct sentence about the amplitude of sound.
A high-amplitude sound must be a high-frequency sound.
A high-amplitude sound must be a high-pitch sound.
A high-amplitude sound must be a loud sound.
A high-amplitude sound must be a low-frequency sound.
A high-amplitude sound must be a sound with a large wavelength.
[1]
© UCLES 2020
1113/01/O/N/20
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4
3
Look at the diagram of a volcano.
smoke and ash
lava
main
vent
outer layer
of the Earth
magma
chamber
(a) Lava from the volcano cools down to make rock.
Which type of rock is made when lava cools down?
[1]
(b) Rock that forms from lava does not contain fossils.
Explain why.
[1]
(c) What is the name of the outer layer of the Earth?
Circle the correct answer.
crust
inner core
mantle
outer core
[1]
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5
(d) The sentences are about the internal structure of the Earth.
Tick () the correct sentence.
The crust floats on the outer core.
The inner core is solid and the outer core is liquid.
The mantle is the coldest part of the Earth.
The outer core is the hottest part of the Earth.
[1]
© UCLES 2020
1113/01/O/N/20
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6
4
The diagram shows a food web.
lion
jackal
wild
cat
goat
rabbit
grass
vole
(a) Which animals in this food web are eaten by the wild cat?
and
[1]
(b) Write a complete food chain that includes the goat and two other animals.
[1]
(c) The number of voles decreases.
Explain how this may affect the number of rabbits.
[1]
(d) Energy is lost from food webs.
Write down one way energy is lost from a food web.
[1]
© UCLES 2020
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7
5
The diagram shows some information about metals.
sodium
lithium
magnesium
react with
cold water
react with
acids
zinc
react with
oxygen
lead
copper
gold
(a) Use the diagram to answer these questions.
(i) Which metal reacts with oxygen but not acid?
[1]
(ii) Describe two ways in which the reactions of magnesium and zinc are similar.
[2]
(b) Sodium is placed in cold water. It reacts to form a gas.
What is the name of this gas?
[1]
© UCLES 2020
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8
6
Carlos investigates light.
(a) He shines blue light into a prism.
blue
light
prism
(i) Describe one thing that happens to the blue light.
[1]
(ii) Carlos changes the blue light to white light.
Describe one other thing that happens to the white light.
[1]
© UCLES 2020
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9
(b) Carlos shines light through different coloured filters onto different colours of a book.
coloured filter
light source
book
Complete his results table.
colour of light
colour of book
red
red
blue
red
red
magenta
colour of light reflected
into eye
[2]
© UCLES 2020
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10
7
Angelique’s pet mouse has baby mice.
Pierre says that grouping together helps the baby mice to keep warm.
Angelique suggests that they plan an investigation to test Pierre’s idea.
They use eight test-tubes filled with hot water to represent eight baby mice.
Angelique labels one tube A and stands it on its own.
She labels another tube B and places it in the middle of six other tubes all labelled C.
tube B
tube A
tube C
Pierre and Angelique obtain these results.
time in minutes
0
1
2
3
4
5
temperature of water in tube A in oC
73
62
54
38
42
40
temperature of water in tube B in oC
73
68
65
62
58
57
temperature of water in tube C in oC
73
65
59
54
49
47
© UCLES 2020
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11
(a) Describe two patterns shown by these results.
1
2
[2]
(b) Describe how these results could be displayed to make these patterns more obvious.
[1]
(c) Angelique says that one result is anomalous.
Which result is anomalous?
tube
time
minutes
Explain how you know the result is anomalous.
[2]
(d) Baby mice do not have fur.
Angelique thinks that mice lose less heat when they grow fur.
Describe an investigation, using test-tubes of hot water, to see if Angelique’s idea is correct.
[2]
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12
8
The diagram shows molecules in a mixture.
(a) Tick () the box next to the correct statement about the mixture.
mixture of four elements
mixture of four compounds
mixture of two elements and two compounds
mixture of one element and three compounds
[1]
(b) Molecules are made of atoms.
Atoms are made of three types of particles.
(i) Electrons are one of these types of particles.
What are the two other types of particles in an atom?
and
[2]
(ii) Which scientist suggested a model for the atom?
Circle the correct answer.
Copernicus
Darwin
Galileo
Rutherford
[1]
© UCLES 2020
1113/01/O/N/20
13
9
Rajiv investigates the speed of a block of wood moving down a slope.
Here is his prediction.
‘I predict that the higher the slope, the faster the block of wood moves.’
Here are his results.
low slope
high slope
block of
wood
time
in seconds
distance travelled
by block in metres
time
in seconds
distance travelled
by block in metres
4
1.00
4
2.00
(a) Is Rajiv’s prediction true?
...........................................
Use Rajiv’s results to explain your answer.
[2]
(b) What two pieces of equipment does Rajiv need for the measurements he makes?
1
2
[1]
(c) He uses 4 seconds for both experiments.
What two other things are kept the same in his investigation to make it a fair test?
1
2
[2]
© UCLES 2020
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14
10 The picture shows a diver wearing breathing apparatus.
(a) The cylinder on his back is filled with gas.
The gas contains an element that the diver needs to survive under water.
Name this element.
[1]
(b) Gaseous exchange takes place in his lungs.
Explain what is meant by the term gaseous exchange.
[1]
© UCLES 2020
1113/01/O/N/20
15
11 Jamila builds this electrical circuit.
switch 1
direction
of
current
switch 2
X
A
switch 3
Y
(a) What type of electrical circuit is this?
Circle the correct answer.
electrostatic
magnetic
parallel
series
[1]
(b) Jamila wants to turn lamp X on but leave lamp Y off.
What must she do?
[1]
(c) Jamila wants to turn lamp Y on but leave lamp X off.
What must she do?
[1]
(d) Jamila closes all the switches.
What happens to the current at point A?
[1]
© UCLES 2020
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16
12 Ahmed investigates the reaction between magnesium lumps and dilute hydrochloric acid.
Look at the diagram. It shows the apparatus he uses.
gas syringe
dilute
hydrochloric acid
magnesium
lump
Look at the graph of Ahmed’s results.
120
110
100
90
80
total
volume of
hydrogen
given off
in cm3
70
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
time in seconds
(a) How long (in seconds) does it take to make 50 cm3 of hydrogen?
seconds
© UCLES 2020
[1]
1113/01/O/N/20
17
(b) Ahmed repeats the experiment with magnesium powder.
Predict what will happen to the rate of the reaction.
Explain why.
[3]
© UCLES 2020
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18
BLANK PAGE
© UCLES 2020
1113/01/O/N/20
19
BLANK PAGE
© UCLES 2020
1113/01/O/N/20
20
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2020
1113/01/O/N/20
Cambridge Lower Secondary Checkpoint

SCIENCE
1113/02
Paper 2
October 2020
45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
• Write your name, centre number and candidate number in the boxes at the top of the page.
• Write your answer to each question in the space provided.
• Do not use an erasable pen or correction fluid.
• Do not write on any bar codes.
• You should show all your working in the booklet.
• You may use a calculator.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
This document has 16 pages. Blank pages are indicated.
IB20 10_1113_02/8RP
© UCLES 2020
[Turn over
2
1
The diagrams A, B, C, D and E show five different invertebrate animals.
A
B
C
E
D
NOT TO SCALE
(a) (i) Which one of the animals is an insect?
Choose from A, B, C, D or E.
Give a reason for your answer.
[1]
(ii) Which one of the animals is an arachnid?
Choose from A, B, C, D or E.
Give a reason for your answer.
[1]
(b) Which one of the animals is not an arthropod?
Choose from A, B, C, D or E.
Give a reason for your answer.
[1]
© UCLES 2020
1113/02/O/N/20
3
2
This question is about the three states of matter.
(a) A gas is blown into a balloon. The balloon changes shape.
Why does the balloon change shape?
Tick () the box next to the correct answer.
The particles of the gas expand to fill the space.
The particles of the gas get bigger.
The particles of the gas hit the surface of the balloon more often.
The particles of the gas slow down.
[1]
(b) Rajiv investigates the cooling curve of a substance.
He measures the temperature of a hot liquid every minute.
The graph shows his results.
90
80
70
60
temperature
in °C
50
40
30
20
10
0
0
1
2 3 4 5 6
time in minutes
7
8
(i) What is the temperature of the hot liquid at the start?
°C
[1]
(ii) Name the process that happens when a liquid changes into a solid.
[1]
(iii) At what temperature does the liquid change into a solid?
°C
© UCLES 2020
1113/02/O/N/20
[1]
[Turn over
4
3
Complete the sentences about thermal (heat) energy transfer.
Choose words from the list.
conduction
convection
radiation
Thermal (heat) energy can be transferred from one place to another place.
When particles are involved, the processes are
and
.
When electromagnetic waves are involved, the process is
.
[2]
4
Look at the list of different energy sources.
wood
sugar
coal
crude oil
(petroleum)
OIL
OIL
OIL
OIL
LPG
GAS
propane
(LPG)
sunflower oil
Which three of these energy sources are non-renewable?
1
2
3
[1]
© UCLES 2020
1113/02/O/N/20
5
5
Complete the sentences about changes that happen in the human body during adolescence.
Choose words or phrases from the list.
at the same time as
body hair
breasts
earlier than
enzymes
hormones
later than
proteins
During adolescence, the human body begins to change.
Both sexes begin to grow
.
This is due to the increased amount of
made by the sex organs.
On average, females become sexually mature
males.
[3]
6
Chen investigates some reactions.
He measures the temperature of the reactants at the start of the reaction.
He measures the temperature of the products at the end of the reaction.
Look at his results.
reaction
temperature at
start
in °C
temperature at
end
in °C
temperature
change
in °C
type of reaction
A
20
15
−5
endothermic
B
20
30
C
15
30
D
25
15
(a) Complete the table.
[2]
(b) Which reaction has the greatest energy change?
Explain how you know.
[2]
© UCLES 2020
1113/02/O/N/20
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6
7
Mia and Blessy sit on a balanced seesaw.
1.0 m
1.5 m
Blessy
Mia
Blessy has a weight of 400 N.
Calculate the weight of Mia.
weight of Mia
© UCLES 2020
1113/02/O/N/20
N
[2]
7
8
Some plants live in dry places where there is very little rainfall.
(a) These plants often have a large network of roots.
Describe two different functions of roots.
1
2
[2]
(b) When it is dry, resurrection plants are rolled up.
In wet conditions, resurrection plants unroll and flatten out.
This exposes the plant’s leaves and reproductive organs.
leaves
reproductive
organs
Explain why these changes are important to the resurrection plant’s survival.
(i) Unrolling to expose its leaves.
[2]
(ii) Unrolling to expose its reproductive organs.
[2]
© UCLES 2020
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8
9
Lily investigates the boiling points of some liquids.
(a) She uses a Bunsen burner to heat 20 cm3 of each liquid in a beaker.
Which equipment should Lily use to measure the boiling point of the liquid?
[1]
(b) Write down one safety precaution that Lily should take.
[1]
© UCLES 2020
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9
10 Mike explains that different materials have different densities.
He says,
‘Materials that are less dense than water will float.
Water has a density of 1 g / cm3.’
He finds out the densities of different materials.
material
density in g / cm3
gold
19.3
plastic
1.05
pumice stone
0.251
silver
10.5
wood
0.715
(a) Predict which two materials will float.
Choose from the table.
and
[1]
(b) Mike collects some water from the sea.
He tries to float the materials from the table in the seawater.
Now three of these materials float.
Use information from the table to explain why.
[2]
© UCLES 2020
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10
11 The seeds of cereal plants provide food for humans.
The diagram shows five varieties of a cereal plant.
A
B
C
produces lots of seeds
small leaves
does not need much water
D
long stems
E
shallow roots
Scientists want to produce a new variety of this cereal plant.
This cereal plant must:
• provide lots of food
• survive in dry conditions.
(a) Which two plants should the scientists use to produce the new variety of cereal plant?
Choose from A, B, C, D, and E.
and
[1]
(b) Describe what the scientists do to produce the new variety.
[2]
(c) Name the process scientists use to produce new varieties of plants and animals.
[1]
© UCLES 2020
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11
12 Look at the picture of an iron pipe.
The iron has reacted with water and a gas in the air to form hydrated iron oxide.
(a) What word describes this reaction?
[1]
(b) Which gas in the air reacts with the iron?
[1]
(c) This reaction is not useful.
Explain why.
[1]
© UCLES 2020
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12
13 Safia finds information about renewable energy resources used in a country for the years 2012
and 2014.
year 2014
year 2012
geothermal
wind
solar
geothermal
solar
wind
biomass
biomass
hydroelectric
hydroelectric
(a) Estimate the percentage of renewable energy provided by biomass in 2012.
%
[1]
(b) The percentage of the renewable energy resources used changed from 2012 to 2014.
Which percentage increased the most?
Circle the correct answer.
biomass
geothermal
hydroelectric
solar
wind
[1]
(c) The energy needs of the world are increasing.
Why is it important to develop renewable energy resources?
[1]
© UCLES 2020
1113/02/O/N/20
13
14 Look at the diagram.
It shows part of the Periodic Table.
H
He
Li
Be
B
C
N
O
F
Ne
Na
Mg
Al
Si
P
S
Cl
Ar
K
Ca
transition elements
(a) Write down the chemical symbol of an element in the same group as chlorine.
[1]
(b) Write down the chemical symbol of an element in the same period as sodium.
[1]
(c) Write down the chemical symbol of the element with an atom with only 8 protons.
[1]
(d) Complete the diagram to show the electronic structure of lithium, Li.
[1]
© UCLES 2020
1113/02/O/N/20
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14
15 The boxes show some ideas about the Solar System.
(a) Match each idea to the correct scientist.
Draw only two lines.
ideas
scientist
Galileo
The first scientist to suggest that the planets
orbited the Sun.
Rutherford
Copernicus
Built a telescope and looked at Jupiter and its
moons. This showed that everything does not
rotate around the Earth.
Pasteur
Darwin
[2]
(b) Here is a list of bodies found in the Solar System.
Earth
Mars
Moon
Sun
Which one of these bodies is visible because it emits light?
[1]
(c) Which two of these bodies are visible because they reflect light?
Mars
Moon
North Star
and
© UCLES 2020
1113/02/O/N/20
Sun
[1]
15
16 Aiko and Oliver investigate thermal (heat) energy.
They heat a copper rod covered in wax.
Here is the apparatus they use.
copper rod
covered in wax
wood peg
paper clips in
the wax
heat
wood block
wood bench
When the copper rod is hot, the wax melts and the paper clips fall onto the bench.
(a) Aiko removes the copper rod. Oliver tells her to be careful.
Complete the sentences.
Aiko must be careful because
.
When she removes the copper rod, she uses
.
[1]
(b) Here are the results.
distance of paper clip from heat
in cm
time for paper clip to fall
in seconds
6
3.2
7
4.3
8
5.4
9
6.6
10
7.9
Aiko says it is a good idea to repeat the experiment.
Explain why this is a good idea.
[1]
© UCLES 2020
1113/02/O/N/20
16
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2020
1113/02/O/N/20
Cambridge Lower Secondary Checkpoint

SCIENCE
1113/01
Paper 1
April 2021
45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
• Write your name, centre number and candidate number in the boxes at the top of the page.
• Write your answer to each question in the space provided.
• Do not use an erasable pen or correction fluid.
• Do not write on any bar codes.
• You should show all your working in the booklet.
• You may use a calculator.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
This document has 20 pages. Any blank pages are indicated.
IB21 05_1113_01/6RP
© UCLES 2021
[Turn over
2
1
Look at the diagram. It shows part of the alimentary canal.
A
B
C
E
D
(a) Where is acid added to the alimentary canal?
Circle the correct answer.
A
B
C
D
E
[1]
(b) Where is digested food absorbed from the alimentary canal into the blood?
Circle the correct answer.
A
B
C
D
E
[1]
(c) Look at the part labelled A on the diagram.
Write down the names of the two parts of the alimentary canal that part A connects.
and
© UCLES 2021
1113/01/A/M/21
[1]
3
2
Look at the descriptions of three rocks, A, B and C.
Rock A is formed in layers. It is soft and contains fossils.
Rock B is made when molten rock cools. It is hard and contains crystals.
Rock C is very hard. It contains distorted fossils due to high temperatures and high pressures.
(a) Complete the sentences to name each type of rock.
Choose from the list.
igneous
metamorphic
Rock A is
rock.
Rock B is
rock.
Rock C is
rock.
sedimentary
[2]
(b) Describe how sedimentary rock is formed.
[2]
© UCLES 2021
1113/01/A/M/21
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4
3
Some objects in the Universe are seen because they emit light.
Other objects are seen because they reflect light.
(a) Tick () the boxes next to the objects that emit light.
Jupiter
Mars
the Sun
North Star
the Earth’s Moon
[2]
(b) Which scientist first suggested that the planets in our Solar System orbit the Sun?
Circle the correct answer.
Copernicus
Darwin
Galileo
Rutherford
[1]
Venus
[1]
(c) Which of these planets is closest to the Sun?
Circle the correct answer.
Earth
© UCLES 2021
Jupiter
Neptune
1113/01/A/M/21
5
4
The diagram shows the shells of five molluscs labelled A, B, C, D and E.
A
B
C
E
D
NOT TO SCALE
Use the key to identify the scientific names of the five molluscs.
shell consists of one single part
go to 2
shell consists of two parts
go to 3
shell is spiral-shaped
mollusc is Buccinum
shell is not spiral-shaped
mollusc is Patella
shell is long and thin
mollusc is Ensis
shell is not long and thin
go to 4
shell has a small tuft of hairs
mollusc is Mytilus
shell does not have a small tuft of hairs
mollusc is Ostrea
1
2
3
4
Write your answers in the table.
scientific name
letter
Buccinum
Ensis
Mytilus
Ostrea
Patella
[2]
© UCLES 2021
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5
The diagram shows part of the Periodic Table.
2
He
1
H
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
19
K
20
Ca
The number above each chemical symbol shows the number of protons in the atom.
(a) How many protons are there in an atom of sodium?
[1]
(b) How many electrons are there in an atom of oxygen?
[1]
(c) Look at the diagram of an atom.
.....................................
.....................................
.....................................
(i) Write down the chemical symbol for this atom.
[1]
(ii) Label the diagram.
Choose from the list.
electron
© UCLES 2021
neutron
1113/01/A/M/21
proton
[1]
7
6
Blessy has two sound wave oscilloscope traces.
trace A
trace B
(a) Circle the correct answers.
Which trace has the higher pitch?
trace A
trace B
they have the same pitch
Which trace has the lower frequency?
trace A
trace B
they have the same frequency
trace B
they have the same loudness
Which trace is louder?
trace A
Which trace has the lower amplitude?
trace A
trace B
they have the same amplitude
[3]
(b) Sound waves are produced by a vibrating object.
What does the vibrating object do to the air particles around it?
[1]
© UCLES 2021
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8
7
Look at the diagram of four different varieties of the same species of chicken.
A
B
C
D
A farmer uses selective breeding to produce a new variety of chicken.
This new variety of chicken must be black with white spots and have a large tail.
Describe two stages in the production of this new variety of chicken.
1
2
[2]
© UCLES 2021
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9
Question 8 starts on the next page.
© UCLES 2021
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10
8
Carlos investigates the reaction between magnesium and hydrochloric acid.
Look at the diagram. It shows the apparatus he uses.
Carlos measures the total volume of gas made every 30 seconds.
(a) Look at the diagram of the gas syringe below.
10
20
30
40
50
60
70
80
90 100 cm3
What is the volume of gas in the gas syringe?
cm3 [1]
(b) Carlos decides to repeat his experiment.
Suggest why it is a good idea to repeat the experiment.
[1]
(c) The hydrochloric acid in the experiment is corrosive.
Describe how Carlos controls this safety risk.
[1]
© UCLES 2021
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11
(d) Look at his results.
time in seconds
total volume of gas in cm3
0
0
30
20
60
35
90
44
120
50
150
50
Circle the best way for Carlos to present his results.
bar graph
line graph
pie chart
scatter graph
[1]
(e) The total volume of gas made depends on the concentration of acid.
Carlos wants to do an experiment that makes about 100 cm3 of gas.
Describe how he decides the correct concentration of acid to use.
[1]
© UCLES 2021
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12
9
Mike has four copper containers.
He puts water into each container.
He puts all the containers in a classroom at 20 °C for 10 minutes.
A
B
C
D
Mike draws this table about the containers.
container
outside surface of
container
volume of water
in cm3
temperature of
water at start
in °C
A
dull
100
60
B
shiny
100
60
C
dull
100
70
D
dull
100
60
(a) Mike compares container A with container B.
The water cools faster in A than in B.
(i) Complete the sentence.
The difference between the two containers is
.
[1]
(ii) Complete the sentence.
Choose from the list.
boiler
conductor
freezer
radiator
The water cools faster in container A because the container is a better
.
© UCLES 2021
[1]
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13
(b) Mike compares container C with container A.
The water cools faster in C than in A.
Why does the water cool faster in C than in A?
[1]
(c) Mike compares container D with container A.
The water cools faster in D than in A.
Suggest why.
[1]
© UCLES 2021
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14
10 Look at the picture of an elephant.
large ears
tusk
trunk
(a) Elephants are adapted to survive.
Draw a line to match each adaptation with the reason why it helps the elephant survive.
adaptation
reason
large ears
pull grass from ground
trunk
keep elephant cool
tusks
used to fight other
elephants
[1]
© UCLES 2021
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15
(b) The chart shows the population of elephants in different parts of Africa in 1981 and 1989.
500
400
1981
300
population of
elephants
in thousands 200
1989
100
0
West Africa
East Africa
South Africa Central Africa
location
(i) In which part of Africa was the largest decrease in the population of elephants between
1981 and 1989?
[1]
(ii) Humans caused the changes in elephant populations between 1981 and 1989.
Suggest two ways humans caused these changes.
1
2
[2]
© UCLES 2021
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16
11 Look at the diagrams. They show the arrangement of particles in solids, liquids and gases.
Look at the statements about solids, liquids and gases.
A
are usually hard
B
take the shape of the container they are put into
C
can be compressed (squashed)
D
completely fill any container they are put into
E
have a fixed shape
F
cannot flow easily
(a) Complete the table by putting the letter for each statement into the correct column.
One letter has been done for you.
solids
liquids
gases
B
[3]
(b) Liquids can evaporate.
Explain what happens to the particles in a liquid during evaporation.
[2]
© UCLES 2021
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17
12 The diagram shows part of a flower that is pollinated by bees.
stigma
anther
anther
petal
The male and female parts of the flower are protected by petals.
(a) Write down one other function of the petals.
[1]
(b) Write down one function of the anther.
[1]
(c) The diagram shows a bee pollinating this flower.
(i) Describe what happens during pollination.
[1]
(ii) Describe what happens after pollination.
[2]
© UCLES 2021
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18
13 Mia is a dancer.
The force she exerts on the floor is 500 N.
(a) She stands with both feet flat on the floor.
force = 500 N
The area of her shoes in contact with the floor is 400 cm2.
Calculate the pressure she exerts on the floor.
pressure
© UCLES 2021
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N / cm2
[2]
19
(b) Mia stands on the points of her feet.
Her new area of contact with the floor is 10 cm2 rather than 400 cm2.
force = 500 N
Describe what happens to the pressure she exerts on the floor.
[1]
(c) Mia balances on one point.
force = 500 N
She cannot remain on one point for a long time because it may damage her toes.
Suggest why this may damage her toes.
[1]
© UCLES 2021
1113/01/A/M/21
20
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2021
1113/01/A/M/21
Cambridge Lower Secondary Checkpoint

SCIENCE
1113/02
Paper 2
April 2021
45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
• Write your name, centre number and candidate number in the boxes at the top of the page.
• Write your answer to each question in the space provided.
• Do not use an erasable pen or correction fluid.
• Do not write on any bar codes.
• You should show all your working in the booklet.
• You may use a calculator.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
This document has 16 pages.
IB21 05_1113_02/7RP
© UCLES 2021
[Turn over
2
1
Yuri draws a picture of a fungus living near some trees.
After three days he draws another picture of the same fungus.
Look at these two pictures.
day 1
day 4
(a) The pictures show evidence that this fungus is a living organism.
What is this evidence?
[1]
(b) Yuri’s teacher says that there are more characteristics of living organisms.
Write down three other characteristics of living organisms.
1
2
3
[3]
© UCLES 2021
1113/02/A/M/21
3
2
These varieties of cat belong to the same species.
Siamese cat
Manx cat
(a) Complete this definition of a species.
Animals that belong to the same species are able to
to produce
together
offspring.
[2]
(b) Siamese cats and Manx cats show variation within a species.
Describe two differences, shown in the diagram, between Siamese cats and Manx cats.
1
2
[2]
© UCLES 2021
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4
3
This question is about different types of chemical reaction.
(a) Complete the sentences.
Choose from the list.
combustion
displacement
neutralisation
respiration
(i) Burning a fuel in air is called
rusting
.
[1]
(ii) The reaction between an acid and an alkali is called
.
[1]
(b) Complete the word equation for the reaction between calcium carbonate and hydrochloric acid.
calcium
carbonate
+
hydrochloric
acid
calcium
chloride
+
+
[2]
© UCLES 2021
1113/02/A/M/21
5
4
Look at the diagram. It shows white light being split into different colours.
te
w hi
li gh
t
Complete the sentences.
Choose from the list.
dispersion
prism
eight
reflection
seven
filter
mirror
refraction
six
When white light enters a
screen
spectrum
it is split into
different colours.
This process is known as
.
The different colours are known as the colours of the
.
[4]
© UCLES 2021
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6
5
This question is about elements, compounds and mixtures.
(a) Look at the boxes. They show the particles in some substances.
A
B
C
D
Which box shows a mixture of two elements?
Circle the correct answer.
A
B
C
D
[1]
(b) A compound is made of only sodium and chlorine.
What is the name of this compound?
[1]
© UCLES 2021
1113/02/A/M/21
7
6
Mia measures the current in different electrical circuits.
(a) Write down the name of the piece of equipment used to measure current.
[1]
(b) Mia connects an electrical circuit with one cell and two lamps.
A1
A3
0.125 A
A2
The reading on A1 is 0.125 A.
Write down the two missing readings.
The reading on A2 is
A.
The reading on A3 is
A.
[1]
(c) Mia connects three more circuits using the same size cells and lamps.
A4
0.25 A
A6
A5
The reading on A4 is 0.25 A.
Write down the two missing readings.
The reading on A5 is
A.
The reading on A6 is
A.
[2]
© UCLES 2021
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8
7
Chen measures the pulse rate of his friends before and after exercise.
All the friends do the same amount and level of exercise.
Here are his results.
friend
pulse rate before exercise
in beats per minute
pulse rate after exercise
in beats per minute
Carlos
74
104
Mike
72
105
Oliver
69
98
change in pulse rate
in beats per minute
(a) Calculate the change in pulse rate for each friend.
Write your answers in the table.
[1]
(b) Are Chen's results reliable?
Yes
No
Explain your answer.
[1]
(c) Chen makes this statement.
‘Mike is the fittest boy in my school.’
Write down two reasons why Chen's statement is not correct.
1
2
[2]
© UCLES 2021
1113/02/A/M/21
9
8
Look at the diagram. It shows solutions being mixed in a plastic cup.
thermometer
lid
plastic
cup
mixture of
solutions
Look at the table. It shows the results of five experiments.
experiment
temperature before
mixing solutions
in °C
temperature after
mixing solutions
in °C
A
15
26
B
15
10
C
15
15
D
15
32
E
15
27
(a) (i) Which experiment transfers the most thermal (heat) energy into the solutions?
[1]
(ii) Complete the sentence.
The reaction in experiment
is endothermic because
. [1]
(b) Suggest a reason for the result in experiment C.
[1]
© UCLES 2021
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10
9
Priya measures the distance a swimmer moves every five seconds.
She investigates two different swimming styles.
She writes her results in a table.
distance in m
time in s
butterfly style
backstroke style
0.0
0.0
0.0
5.0
8.5
9.0
10.0
16.5
18.0
15.0
25.0
34.5
20.0
33.0
35.0
25.0
42.0
46.0
(a) One of the results is anomalous.
Circle the anomalous result in the table.
© UCLES 2021
1113/02/A/M/21
[1]
11
(b) (i) Complete the distance/time graph for the butterfly style:
• label the x-axis and y-axis
• plot the other three points
• draw a line of best fit.
50.0
40.0
30.0
.........................................
20.0
10.0
0
0
5.0
10.0
15.0
20.0
25.0
.........................................
[3]
(ii) Predict the distance the swimmer moved in the first 12 seconds.
m [1]
© UCLES 2021
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12
10 The diagram shows the heart of a human.
The darker grey shading shows oxygenated blood.
A
B
heart
C
D
Use the information in the diagram to match each letter with the correct description of the
blood vessel.
letter
description of the blood vessel
A
artery taking deoxygenated blood
to the lungs
B
artery taking oxygenated blood
to the body
C
vein taking deoxygenated blood
to the heart
D
vein taking oxygenated blood
to the heart
[3]
© UCLES 2021
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13
11 Look at the chemical symbols for four metals.
Cu
Zn
Na
Ca
Answer the questions.
Each chemical symbol can be used once, more than once or not at all.
(a) Which of the four metals is the most reactive?
[1]
(b) Which of the four metals does not react with water or dilute hydrochloric acid?
[1]
(c) Which of the four metals reacts slowly with dilute hydrochloric acid?
[1]
(d) Which of the four metals is lowest in the reactivity series?
[1]
© UCLES 2021
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14
12 Safia draws two pie charts to show the energy resource use in her country.
oil
natural gas
coal
nuclear
renewables
Year 2018
Year 2040
The pie chart for the year 2040 shows the predicted energy resource use.
The predicted natural gas use decreases from 2018 to 2040.
The predicted renewables use increases from 2018 to 2040.
(a) Describe two other changes in predicted energy resource use from 2018 to 2040.
1
2
[2]
(b) (i) Name one renewable energy resource.
[1]
(ii) Suggest why the renewable energy resource use is predicted to increase from 2018 to
2040.
[1]
© UCLES 2021
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15
13 Angelique investigates how quickly plants absorb water.
She uses the stem and leaves of a plant called celery.
She puts a stem of celery in a jar of coloured water.
After one hour she looks at the celery to see how much coloured water it has absorbed.
This is shown in the diagram.
leaves
coloured water
absorbed
celery stem
jar
coloured
water
at start
after one hour
(a) Suggest how Angelique measures the amount of coloured water the celery has absorbed.
[1]
(b) Angelique also investigates the effect of temperature on the absorption of water.
State two variables that Angelique controls in this investigation.
1
2
[2]
© UCLES 2021
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16
14 Carlos researches the solubility of different salts.
He finds this information on the internet.
All potassium
and sodium salts
are soluble
in water.
Most sulfates
are soluble in
water (except
barium, calcium
and lead).
Most chlorides
are soluble in
water (except lead
and silver).
All nitrates are
soluble in water.
Use the information to answer these questions.
(a) Write down the name of one insoluble sulfate.
[1]
(b) Look at the chemical formula of a salt.
KCl
Is the salt soluble?
Yes
No
Explain your answer.
[1]
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2021
1113/02/A/M/21
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/01
Paper 1
October 2021
45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
• Write your name, centre number and candidate number in the boxes at the top of the page.
• Write your answer to each question in the space provided.
• Do not use an erasable pen or correction fluid.
• Do not write on any bar codes.
• You should show all your working in the booklet.
• You may use a calculator.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
This document has 16 pages. Any blank pages are indicated.
IB21 10_1113_01/9RP
© UCLES 2021
[Turn over
2
1
The table describes some parts of the circulatory system.
Complete the table.
part
function
artery
carries blood from the heart
heart
allows exchange of substances between blood and organs
vein
[3]
© UCLES 2021
1113/01/O/N/21
3
2
The diagram shows a cooling curve for a pure substance.
gas
liquid
temperature
in C
X
freezing
solid
time
in minutes
(a) Which word describes the process X on the cooling curve?
Circle the correct answer.
boiling
condensing
evaporating
melting
[1]
(b) Describe two things that happen to the particles of the substance during freezing.
1
2
[2]
(c) A solid is heated until it becomes a gas.
Sketch a graph to show how the temperature changes during this process.
Use the axes provided.
temperature
in C
time
in minutes
[2]
© UCLES 2021
1113/01/O/N/21
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4
3
Look at the diagram of the Sun and eight planets.
Sun
A
B
C
D
E
F
H
G
NOT TO SCALE
(a) Which letter represents the Earth?
[1]
(b) Which letter represents the planet that takes the longest time to orbit the Sun?
[1]
(c) Which letter represents the largest planet in the Solar System?
[1]
(d) Write down the names of planets B, F and H.
B
F
H
[1]
© UCLES 2021
1113/01/O/N/21
5
4
This cactus lives in a hot and dry desert.
stem
spines
sand
root
(a) The cactus has long roots that spread out in the sand.
(i) Suggest how the roots help the cactus survive in the hot and dry desert.
[1]
(ii) Explain one other way the cactus is adapted to living in the hot and dry desert.
[1]
(b) The cactus is eaten by kangaroo rats.
The kangaroo rats are eaten by snakes.
Desert foxes feed on snakes.
Complete the food chain for these organisms.
[2]
© UCLES 2021
1113/01/O/N/21
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6
5
Jamila makes zinc sulfate.
She uses an acid and zinc metal.
The diagram shows the stages Jamila uses to make zinc sulfate.
The stages are not in the correct order.
A
heat
heat the filtrate to concentrate the solution
B
filter the reaction mixture
C
add excess zinc to the acid then gently heat
D
dry the zinc sulfate crystals with filter paper
E
leave the filtrate to evaporate slowly
© UCLES 2021
1113/01/O/N/21
7
(a) Put the stages in order to show the correct method.
One has been done for you.
A
[2]
(b) Write down the name of the acid Jamila uses to make zinc sulfate.
[1]
(c) When Jamila adds zinc to the acid a gas is made.
Write down the name of this gas.
[1]
© UCLES 2021
1113/01/O/N/21
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8
6
Oliver investigates how the number of lamps in a circuit affects the current.
He connects the lamps in series.
He uses identical lamps.
Oliver writes his results in a table.
number
of lamps
current
in A
1
6.0
2
3.0
3
2.8
4
1.5
5
1.0
(a) Draw a graph of the results by:
•
labelling the number of lamps on the x-axis
•
labelling the current on the y-axis
•
plotting all the points.
[3]
(b) Complete the graph by:
•
putting a circle around the anomalous result
•
joining the other points with a smooth curve.
[2]
(c) Describe two patterns in his results.
1
2
[2]
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7
This question is about growing tomato plants.
(a) (i) Write down the name of the process in tomato plants which uses carbon dioxide.
[1]
(ii) Write down the name of the two products of this process.
and
[2]
(iii) State one reason why this process is important for animals.
[1]
(b) Tomato plants need to absorb mineral salts.
(i) Write down the name of the part of a plant that absorbs mineral salts.
[1]
(ii) Describe how mineral salts are transported in plants.
[1]
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8
Aiko investigates the reaction of magnesium with hydrochloric acid.
The diagram shows her equipment.
X
delivery tube
bowl
water
25 cm3 of hydrochloric acid
and
excess magnesium ribbon
(a) Aiko uses the equipment labelled X to measure the volume of gas made in the reaction.
Write down the name of equipment X.
[1]
(b) Aiko collects 35 cm3 of gas in 5 minutes.
Aiko wants to find out what happens when the concentration of acid is increased.
Aiko doubles the concentration of acid she uses and repeats the experiment.
(i) Predict the volume of gas she collects in 5 minutes.
cm3
Explain your answer.
[1]
(ii) Write down two variables she controls.
1
2
[2]
(c) Aiko wants to do a similar investigation with sodium and hydrochloric acid.
Explain why it would not be safe to use sodium.
[1]
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9
Look at the picture of a toad near a pond where it lives.
Humans also live near the pond.
(a) Toads reproduce by laying their eggs in water.
Suggest two ways human activities reduce the population of toads in the pond.
1
2
[2]
(b) Toads are vertebrates.
They have lungs and a moist skin.
Complete this sentence about toads.
Choose from the list.
amphibians
birds
fish
mammals
Toads belong to a group of vertebrates called
reptiles
.
[1]
(c) Complete this sentence about toads.
All the toads in the pond reproduce together to produce fertile offspring.
This means the toads in the pond all belong to the same
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.
[1]
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10 Blessy races four snails, A, B, C and D.
A
D
B
C
She draws a distance/time graph for each of the four snails.
distance
in cm
time
in minutes
(a) The distance of the race is 50 cm.
Which snail wins the race?
Circle the correct answer.
A
© UCLES 2021
B
C
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D
[1]
13
(b) Which snail does not move for part of the race?
Circle the correct answer.
A
B
C
D
[1]
(c) Which snail moves the fastest between 1 minute and 2 minutes?
Circle the correct answer.
A
B
C
D
[1]
(d) What is the average speed of snail D over 5 minutes?
Circle the correct answer.
4 cm / minute
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5 cm / minute
8 cm / minute
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40 cm / minute
[1]
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11 Complete these sentences about the structure of the Earth.
At the very centre of the Earth is the
.
This is surrounded by a layer of magma called the
On top of the magma is the Earth’s outer layer called the
.
.
[3]
12 The picture shows a fossil of a fish.
Fossils are often destroyed when metamorphic rock forms.
Explain why.
[1]
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BLANK PAGE
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16
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2021
1113/01/O/N/21
Cambridge Lower Secondary Checkpoint

SCIENCE
1113/02
Paper 2
October 2021
45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
• Write your name, centre number and candidate number in the boxes at the top of the page.
• Write your answer to each question in the space provided.
• Do not use an erasable pen or correction fluid.
• Do not write on any bar codes.
• You should show all your working in the booklet.
• You may use a calculator.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
This document has 16 pages. Any blank pages are indicated.
IB21 10_1113_02/8RP
© UCLES 2021
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2
1
This question is about cells, tissues and organs in plants and animals.
(a) Complete the table.
Tick () the box that describes each part.
part of plant
cell
tissue
organ
leaf
palisade mesophyll
root hair
[2]
(b) Complete the table.
Tick () the box that describes each part.
part of animal
cell
tissue
organ
sperm
stomach
heart
[2]
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3
2
This question is about elements and compounds.
(a) Match the name of the element to its correct chemical symbol.
element
chemical symbol
B
beryllium
Be
boron
Br
[1]
(b) Look at the formula of this compound.
NaCl
The compound contains two elements.
One element is chlorine.
Write down the name of the other element.
[1]
(c) Look at the formula of this compound.
CaO
What type of compound is CaO?
Circle the correct answer.
carbonate
hydroxide
oxide
sulfate
[1]
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3
This question is about energy transfer processes.
(a) Draw a line from each method of energy transfer to its example.
method of energy transfer
example
The way the air above a heater
becomes warm.
radiation
The way energy from the Sun
reaches the Earth.
convection
The way the metal handle of a
cooking pot gets hot.
[1]
(b) The diagram shows a copper rod being heated.
Explain how heat is transferred through the copper rod.
Use ideas about particles in your answer.
[3]
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5
4
Weeds reduce the growth of crops.
Rajiv is testing a new weed killer to reduce the number of weeds.
He wants to find the correct concentration of weed killer to kill weed seedlings.
He uses cotton wool soaked in weed killer solution.
The cotton wool is placed in a dish containing some weed seedlings.
weed seedlings
dish
cotton wool soaked
in weed killer solution
Rajiv does five different experiments.
In each experiment he uses a different concentration of weed killer solution.
(a) (i) State one variable he changes in each experiment.
[1]
(ii) State two variables he controls in each experiment.
1
2
[2]
(iii) State two variables he measures in each experiment.
1
2
[2]
(b) Suggest why Rajiv washes his hands after handling the cotton wool soaked in weed killer.
[1]
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5
Priya has two magnets.
N
S
N
bar magnet
S
horseshoe magnet
(a) Priya dips the bar magnet into iron filings.
Where will most of the iron filings stick to the magnet?
Explain your answer.
[2]
(b) Look at the horseshoe magnet.
Put an X on the diagram to show where the magnetic field is strongest.
[1]
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(c) Which pattern shows the magnetic field lines of a bar magnet?
N
S
N
A
N
S
B
S
N
C
S
D
Choose from A, B, C or D.
answer
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[1]
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6
Carlos investigates the pH of some liquids.
Some of the liquids are very acidic and some are very alkaline.
(a) Describe how Carlos measures the pH of the liquids.
[1]
(b) Some of the liquids are dangerous to use.
Write down one safety precaution Carlos takes during his investigation.
Explain why this safety precaution is needed.
[2]
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7
Mike owns a group of sheep that he uses to produce wool.
He wants to increase the amount of wool his sheep produce.
He mates his female sheep with a different variety of male sheep.
(a) What term describes this way of producing a new variety of sheep?
[1]
(b) The diagram shows Mike’s female sheep and three different varieties of male sheep.
female sheep
male A
male B
male C
Which one of the three varieties of male sheep should Mike mate with his female sheep to
increase the amount of wool his sheep produce?
Give a reason for your answer.
variety
reason
[1]
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8
Look at the model of a carbon atom.
particle X
proton
particle Y
(a) Write down the name of:
particle X
particle Y
[2]
(b) Circle the name of the scientist who suggested a model for an atom.
Copernicus
Galileo
Newton
Pasteur
Rutherford
[1]
(c) The diagram shows part of the Periodic Table.
1
H
3
Li
11
Na
19
K
4
Be
12
Mg
20
Ca
5
B
13
Al
6
C
14
Si
7
N
15
P
8
O
16
S
9
F
17
Cl
2
He
10
Ne
18
Ar
(i) Complete the sentence.
Carbon is in Period
of the Periodic Table.
[1]
(ii) Circle the element which has similar chemical properties to carbon.
Ar
© UCLES 2021
Al
B
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Li
Si
[1]
11
9
Look at the diagrams of some sound waves.
A
B
C
D
You can use each letter once, more than once, or not at all.
(a) Which wave has the highest frequency?
[1]
(b) Which wave shows the quietest sound?
[1]
(c) Which wave shows the lowest pitch?
[1]
(d) Which two waves have the same amplitude?
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and
[1]
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12
10 During breathing, air passes into the alveoli (air sacs) of the lungs, and is then released back into
the atmosphere.
Look at the table.
It shows the composition of inhaled air (air we breathe in) and exhaled air (air we breathe out).
gas
carbon dioxide
percentage in inhaled air
0.04
percentage in exhaled air
4
nitrogen and other gases
80
80
oxygen
20
16
(a) Describe the differences between the composition of inhaled air and exhaled air.
[2]
(b) Explain what happens in the alveoli to cause these differences between inhaled and
exhaled air.
[2]
(c) Air enters the human respiratory system through the nose and nasal cavity.
Write down two other parts that inhaled air moves through before it reaches the alveoli.
and
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[1]
13
11 The table describes the reaction of some metals with cold dilute acid and cold water.
reaction with
cold dilute acid
reaction with
cold water
potassium
reacts violently
reacts very rapidly
lithium
reacts violently
reacts very rapidly
calcium
reacts violently
reacts very rapidly
magnesium
reacts rapidly
extremely slow
reaction
metal X
reacts slowly
no reaction
copper
no reaction
no reaction
gold
no reaction
no reaction
metal
Use information from the table to answer these questions.
(a) Explain how you can tell that magnesium reacts faster with cold dilute acid than with cold
water.
[1]
(b) Suggest the name of metal X.
[1]
(c) Potassium reacts with cold water to make a colourless gas and an alkaline solution.
Write the name of the:
colourless gas
alkaline solution
[2]
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14
12 Complete the table to show the colour each object appears in different colours of light.
colour of light
colour of object
white
red
green
green
blue
red
colour the object appears
[2]
13 Blessy uses pure white light to produce a spectrum of colours.
equipment X
red
orange
yellow
green
blue
indigo
violet
white light
(a) What is the name of the process that splits white light into a spectrum of colours?
[1]
(b) Write down the name of equipment X.
[1]
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15
14 Look at the list of energy sources.
Tick () the two renewable energy sources.
coal
hydroelectric
oil
natural gas
solar
[2]
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BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
© UCLES 2021
1113/02/O/N/21