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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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
1113/02/O/N/21
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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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
percentage in inhaled air
percentage in exhaled air
carbon dioxide
0.04
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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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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14 Look at the list of energy sources.
Tick () the two renewable energy sources.
coal
hydroelectric
oil
natural gas
solar
[2]
© UCLES 2021
1113/02/O/N/21
Cambridge Lower Secondary Checkpoint

SCIENCE
1113/01
Paper 1
April 2022
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.
IB22 05_1113_01/8RP
© UCLES 2022
[Turn over
2
1
The diagram shows a ginger plant.
leaf
flower
A
root
(a) One of the organs of the ginger plant is labelled with the letter A.
Write down the name of this organ.
[1]
(b) Part A transports water and food such as sugar.
Which part of the ginger plant produces food?
[1]
(c) Describe one function of a root.
[1]
(d) State one reason why flowers are important in the life cycle of a plant.
[1]
© UCLES 2022
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3
2
Look at the diagram.
It 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
(a) Write down the chemical symbol for an element that has an electronic structure with a full
outer orbit.
[1]
(b) Write down the chemical symbol for the most reactive Group 7 (or 17) element shown in
the Periodic Table.
[1]
(c) Write down the chemical symbol for the element which is in Group 2 and Period 3.
[1]
(d) Which scientist suggested the idea that atoms have a nucleus?
Circle the correct answer.
Dalton
Darwin
Galileo
Rutherford
[1]
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3
During the day a desert is hot and dry.
At night the desert becomes very cold.
The diagram shows two organisms that live in the desert.
fennec fox
cactus
(a) Fennec foxes live in burrows during the day and hunt at night.
Write down three ways the fennec fox is adapted to hunt at night.
Use the diagram to help you.
1
2
3
[3]
(b) Write down two ways the cactus plant is adapted to survive in dry conditions.
Use the diagram to help you.
1
2
[2]
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5
4
Look at the distance / time graph for a car journey.
60
D
50
B
40
distance
travelled
in km
C
30
20
10
A
0
0
E
2
4
6
8
10
time
in hours
(a) Write down between which points on the graph the car is not moving.
and
[1]
(b) Calculate the average speed of the car during the first 2 hours.
Include the units in your answer.
average speed =
© UCLES 2022
units
1113/01/A/M/22
[3]
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5
Priya investigates the reaction between zinc and hydrochloric acid.
The diagram shows the equipment she uses.
20 40 60 80 100
gas syringe
excess
zinc
hydrochloric acid
Priya:
•
puts 1 g of powdered zinc into the flask
•
adds 25 cm3 of hydrochloric acid
•
collects the gas made in two minutes
•
repeats the experiment two more times using pieces of zinc of different sizes.
Priya writes down her results.
powdered zinc = 80 cm3 of gas
large pieces of zinc = 6 cm3 of gas
small pieces of zinc = 36 cm3 of gas
(a) Complete this table to present her results.
[3]
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(b) Write down the variable Priya changes in her investigation.
[1]
(c) Write a conclusion for her investigation.
Explain your answer.
[2]
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6
The picture shows a racehorse with her foal.
(a) The foal is bred to be a fast runner.
The horse breeder chooses the foal’s parents because they are both fast runners.
What word describes this type of breeding?
Circle the correct answer.
natural
random
relative
selective
[1]
(b) The foal inherits characteristics from his parents.
Complete these sentences.
The foal inherits characteristics from his parents through
This material is found in the
material.
of the cell.
[2]
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7
The diagram shows an identification key for different rocks.
rock sample
rock does not fizz with acid
rock fizzes with acid
limestone
grains are
rounded
grains are crystals
tightly held together
in a close-fitting pattern
grains are too
small to see
mudstone
pale colour
large crystals
dark colour very
small crystals
rock contains small
sand-like grains
rock contains large
rounded pebbles
granite
basalt
sandstone
conglomerate
(a) Which two rocks in the key are igneous rocks?
and
[1]
(b) Write down one similarity and one difference between sandstone and conglomerate.
Use the identification key to help you.
similarity
difference
[2]
(c) Limestone can be changed into a metamorphic rock called marble.
Write down one condition that changes limestone into marble.
[1]
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8
Oliver investigates light rays.
(a) (i) Complete the diagram to show what happens when a light ray hits a plane mirror.
light ray
plane mirror
[1]
(ii) Complete the diagram to show what happens when a light ray passes through a
glass block.
light ray
glass block
[2]
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(b) When white light passes through a prism, it is split into the colours of the rainbow.
screen
white light
ray
prism
red
orange
yellow
green
blue
indigo
violet
Write down the name of this process.
[1]
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9
Ahmed has 20 pepper plants.
He uses a liquid fertiliser to increase his crop of peppers.
This fertiliser is sprayed on the leaves or watered on the roots.
Chilli’n Liquid
Fertiliser
Spray on leaves or
water on the roots
Ahmed sprays the leaves of 10 pepper plants with the liquid fertiliser.
He waters the roots of the other 10 pepper plants with the liquid fertiliser.
(a) Describe two pieces of evidence Ahmed collects to compare the growth of the pepper plants.
1
2
[2]
(b) Ahmed uses 20 pepper plants for his investigation.
Explain why using 20 pepper plants is better than using only two pepper plants.
[1]
(c) Suggest two variables Ahmed controls in his investigation.
1
2
[2]
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10 The diagrams show the particles in different substances.
The different circles show different atoms.
Draw one line from each diagram to its correct description.
diagram
description
mixture of compounds
mixture of elements
mixture of an element and a compound
single compound
single element
[3]
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11 Rajiv draws the magnetic field pattern for a weak bar magnet.
N
S
(a) Write down the names of the parts labelled N and S.
and
[1]
(b) Which sentences about the magnetic field pattern for a weak bar magnet are correct?
Tick () the three correct sentences.
Each field line has at least one arrow.
Each field line is continuous.
The field lines are all the same length.
The field lines come out of N and go into S.
The field lines cross over each other.
[2]
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(c) Rajiv has a strong bar magnet.
Look at the magnetic field pattern for his strong bar magnet.
N
S
Describe one way the magnetic field pattern for the strong bar magnet is different from the
pattern for the weak bar magnet.
[1]
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12 Mia hears the sound from a loudspeaker.
ear
air particles
loudspeaker
(a) Complete the two missing labels.
Choose words from the list.
compression
dispersion
rarefaction
reflection
refraction
[2]
(b) Mia uses an oscilloscope to look at a sound wave.
A
B
D
C
length
Which letter shows one wavelength?
Which letter shows the amplitude of the wave?
[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
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 Cambridge Assessment. Cambridge Assessment is the brand name of the University of Cambridge
Local Examinations Syndicate (UCLES), which is a department of the University of Cambridge.
© UCLES 2022
1113/01/A/M/22