Cambridge Primary Checkpoint

SCIENCE
0846/02
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 20 pages. Any blank pages are indicated.
IB21 10_0846_02/8RP
© UCLES 2021
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2
1
(a) Oliver has two groups of animals.
group A
group B
earthworm
bat
dog
butterfly
cat
duck
tiger
Write down one feature that Oliver uses to put the animals into these two
groups.
[1]
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(b) Look at these animals.
gorilla
snail
frog
snake
horse
Oliver puts these animals into two groups.
Complete the table.
Two have been done for you.
group C
group D
frog
snake
[1]
(c) Write down the feature that Oliver uses to put the animals into these two
groups.
[1]
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4
2
Mixtures are separated using different methods.
Draw a line between each mixture and its correct separation method.
mixture
separation method
dissolve in water and filter
iron powder and
aluminium powder
use a magnet
sand and salt
burn the mixture
salt solution
evaporate the mixture
sand and water
melt the mixture
lumps of marble and
powdered marble
sieve the mixture
filter the mixture
[5]
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3
Complete the crossword puzzle.
Clues
1 down
Weight is measured in
.
2 down
Weight is a type of
.
3 across
Mass is measured in
.
1
2
3
[3]
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6
4
The parts of a plant have different functions.
Draw a line from each part to its correct function.
part
function
flower
takes in light
leaf
for reproduction
root
transports water
stem
takes water in
[2]
5
Copper sulfate is a blue solid that dissolves in water.
Complete these sentences about copper sulfate dissolving in water.
Choose words from the list.
insoluble
soluble
solute
solution
solvent
Copper sulfate is
in water.
Copper sulfate dissolves in water to form a blue
Water is the
and copper sulfate is the
.
.
[3]
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6
The platypus has features that are suited to its habitat.
big beak
thick fur
webbed feet
(a) Complete the sentences.
The platypus has thick fur to
.
The platypus has webbed feet to help it
.
[1]
(b) Complete the sentences.
The platypus is camouflaged to help it
.
The platypus has a big beak to
.
[2]
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7
(a) These words are about light.
Draw a line from the word to the correct meaning.
word
meaning
opaque
dark shape that appears on a
surface when light is blocked
material that lets light through
reflects
material that stops light going
through
shadow
what happens to light when it
hits a mirror
[2]
(b) Safia is looking at a flower.
Explain how Safia sees the flower.
[3]
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8
Yuri learns about how sound travels in different materials.
Tick () the correct box to show if the sentence is true or false.
sentence
true
false
Sound travels in air.
Sound does not travel in water.
Sound travels in solids.
Sound does not travel in a vacuum (no air).
[2]
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10
9
Forces make objects move.
Draw one arrow () on each picture to show the direction of the force.
Start the arrow from the large dot (
) in each picture.
One has been done for you.
The ball is kicked.
The weights are lifted.
The box is pulled
by the boy.
The trolley is pushed
by the girl.
The hands are moved
together.
The girl pushes
on the wall.
[2]
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11
10 Diesel is a liquid fuel used in the engines of some motor cars and trucks.
(a) Diesel evaporates slowly at room temperature.
Write down what happens during evaporation.
[1]
(b) Suggest one way to increase the speed of evaporation.
[1]
(c) Evaporation is a reversible change.
Name the process that is the reverse of evaporation.
[1]
11 Aiko is in hospital.
kidney
machine
Aiko
Her kidneys do not work.
Aiko is attached to a kidney machine.
Explain how the kidney machine is helping Aiko.
[2]
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12
12 Look at this list of materials.
property
is it hard?
is it flexible?
is it
transparent?
A
yes
yes
no
is it a liquid
at room
temperature?
no
B
yes
no
no
no
C
yes
yes
no
no
D
no
no
yes
yes
E
no
yes
no
no
F
yes
yes
yes
no
G
no
no
no
yes
material
(a) Which two materials are see-through?
[1]
(b) Which material is water?
[1]
(c) Material E is suitable to make clothes.
Write down the best two reasons why material E is suitable to make clothes.
1
2
[2]
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13
13 The Sun appears to move across the sky during a day in summer.
The diagram shows different positions of the Sun.
Sun
surface of Earth
Here are some sentences about the Sun.
Draw a line from each sentence to true or false.
sentence
It is midday when the Sun is
highest in the sky.
The Sun goes down in the west.
true
In winter the Sun is lower in the
sky than in the summer.
false
In winter the Sun moves in the
opposite direction.
[2]
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14
14 Mike investigates the germination of seeds.
Mike:
•
puts filter paper and cotton wool into 6 dishes
•
puts 15 seeds into each dish
•
adds water to 3 of the dishes
•
puts the dishes in different places
•
looks at the dishes after 4 days.
filter
paper
dish
seeds
cotton
wool
A
D
B
C
E
F
Here are his results.
dish
water
condition
number of seeds
germinated after 4 days
A
yes
in a cold room
in the dark
2
B
yes
in a warm room
with light
C
yes
in a warm room
in the dark
10
D
no
in a cold room
in the dark
0
E
no
in a warm room
with light
0
F
no
in a warm room
in the dark
0
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(a) Mike did not write down his results for dish B.
Here are his results for dish B.
How many seeds germinated in dish B?
[1]
(b) Which conditions are needed for germination?
Circle all the correct answers.
cold
dark
light
no water
warmth
water
[2]
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16
15 There are craters on the surface of the Moon.
crater
Blessy investigates how craters are made.
Blessy:
•
smoothes the surface of sand in a tray
•
drops a stone into the sand
•
measures the size of the crater the stone makes in the sand
•
repeats the method dropping the stone from different heights
•
repeats the measurements for each height.
sand
stone
tray
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Here are her results.
height of drop
in cm
size of crater in mm
measurement for
drop 1
measurement for
drop 2
20
12
11
40
15
14
60
28
26
80
32
30
100
33
35
(a) What equipment does Blessy use to measure the size of the crater?
[1]
(b) Blessy changes the height of the drop.
Write down two factors Blessy keeps the same in her investigation.
1
2
[2]
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18
16 Rajiv dissolves a fertiliser in water.
He records the mass of fertiliser that dissolves in 5 cm3 of water.
Rajiv makes measurements at 6 different temperatures.
He shows his results in a graph.
50
40
mass dissolved
in grams
30
20
10
0
0
10
20
30
temperature in °C
40
50
(a) Rajiv wants to make his results more reliable.
Suggest two ways he can make his results more reliable.
1
2
[2]
(b) Describe the pattern of his results.
[1]
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(c) What mass of fertiliser is dissolved in 5 cm3 of water at 30 °C?
g [1]
(d) Predict the mass of fertiliser that dissolves at 60 °C.
g [1]
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© UCLES 2021
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