Cambridge International Examinations
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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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
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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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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