Cambridge Primary Checkpoint

SCIENCE
0846/02
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 20 pages. Blank pages are indicated.
IB20 10_0846_02/5RP
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2
1
(a) The picture shows a plant.
.........................................
.........................................
.........................................
.........................................
Complete the four labels on the diagram.
[1]
(b) Complete the sentence.
and transported
Water is taken in through the
through the
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.
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[2]
3
2
The table shows information about two substances.
property
substance
does it
dissolve in
water?
does it
dissolve in
ethanol?
salt
yes
no
sugar
yes
yes
Blessy wants to separate a mixture of salt and sugar.
(a) She tries to use a magnet to separate the substances.
This does not work.
Explain why using a magnet does not work.
[1]
(b) Blessy adds water to some of the mixture.
She stirs the mixture and then filters it.
Explain why this does not separate the mixture of salt and sugar.
[1]
(c) Blessy separates the remaining mixture of salt and sugar.
Describe what she does.
[2]
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4
3
Carlos investigates forces.
(a) Which apparatus does he use to measure force?
[1]
(b) He writes his results in a table.
type of force
force
pull
4.8
push
6.1
twist
5.3
Carlos has not put the unit for force in the table.
What is the unit for force?
[1]
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5
4
Hassan has smart glass in his windows.
He can switch the smart glass on and off.
smart glass
switched off
smart glass
switched on
Describe what happens to the smart glass in the two pictures.
When the smart glass is switched on Hassan can see through it because it is
.
When the smart glass is switched off Hassan cannot see through it because it is
.
[2]
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6
5
Chen and Aiko investigate how seeds germinate.
pot
seed
soil
in the fridge
in a warm classroom
(a) Give one reason why this is a fair test.
[1]
(b) Here are the results for the pot in the warm classroom.
day
number of seedlings in
the warm classroom
pot
1
0
2
1
3
2
4
4
Draw a line graph of the results.
Label the y-axis.
6
5
4
.....................................
3
.....................................
2
1
0
1
2
3
day
4
5
[3]
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(c) Here are the results for both pots.
Complete the table to predict the number of seedlings on day 5.
day
number of seedlings in
the warm classroom
pot
number of seedlings in
the fridge pot
1
0
0
2
1
0
3
2
1
4
4
2
5
[2]
(d) Use Chen and Aiko’s results to write a conclusion for their investigation.
[1]
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6
Different materials have different properties.
Look at the table.
It shows some properties of six materials.
material
hardness
melting point solubility in water
strength
(1 = soft and (1 = low and
(1 = weak and
10 = hard)
10 = high)
10 = strong)
A
9
10
soluble
9
B
4
10
insoluble
1
C
3
9
insoluble
10
D
10
10
insoluble
10
E
4
4
insoluble
6
F
9
9
insoluble
9
(a) Which material in the table dissolves in water?
[1]
(b) It is not possible to tell which of material C or material D is the stronger.
Explain why.
[1]
(c) Mike sorts the materials into two groups.
Group 1 – materials A, D and F
Group 2 – materials B, C and E
Which property did Mike use to sort the materials?
[1]
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7
Pierre has five pictures showing him running.
A
B
C
D
E
He draws arrows on the pictures.
(a) Which picture shows the direction of the force of gravity?
Circle the correct answer.
A
B
C
D
E
[1]
E
[1]
(b) Air resistance slows him down.
Which picture shows the direction of air resistance?
Circle the correct answer.
A
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B
C
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D
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10
8
Oliver investigates what happens to materials when they are heated.
Here are his results.
material
before heating
after heating
A
silver solid
white solid
B
green solid
black solid
C
colourless liquid
gas
D
white solid
white solid
E
white solid
colourless liquid
(a) Which material does not change when Oliver heats it?
[1]
(b) Which material boils when Oliver heats it?
[1]
(c) Which material melts when Oliver heats it?
[1]
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9
An electromagnet attracts magnetic objects.
Look at the picture of an electromagnet.
+
−
Which objects does the electromagnet attract?
Tick () the correct objects.
object
aluminium spoon
copper wire
iron key
plastic toy
steel nail
wooden ruler
[2]
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12
10 Lily counts the number of different organs in a human body.
How many lungs do humans have?
How many kidneys do humans have?
How many livers do humans have?
How many stomachs do humans have?
[1]
11 This question is about forces.
Decide if each statement is true or false.
Tick () the correct box.
true
false
forces make objects change speed
friction is a force
pitch is a force
weight is a force
[2]
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13
12 Safia makes a musical instrument.
She pulls a rubber balloon over the top of a cup.
Safia pinches the
rubber balloon
rubber balloon
cup
Safia pinches the rubber balloon with her fingers and then lets the rubber go.
A sound is made.
(a) Why does the rubber balloon make a sound?
[1]
(b) Describe how Safia can increase the volume of the sound.
[1]
(c) Describe how Safia can increase the pitch of the sound.
[1]
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13 The diagram shows a feeding relationship between three living organisms.
corn
mouse
owl
(a) What is the name of this type of diagram?
[1]
(b) Describe the feeding relationship between these three organisms.
[1]
(c) Corn is the producer in this relationship.
Explain why.
[1]
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(d) Owls are predators.
Name one feature owls have which makes them good predators.
Explain how this feature is useful.
feature
explanation
[2]
14 Mia connects an electrical circuit.
cell
switch
wire
lamps
She closes the switch.
The lamps are very bright.
Mia adds two more lamps to the electrical circuit.
Describe what happens.
[1]
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16
15 The table shows some boiling points of substances.
substance
boiling point in °C
A
15
B
1095
C
100
D
0
E
444
(a) What is the meaning of the term boiling point?
[2]
(b) Which substance could be water?
Explain why.
[2]
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16 The teacher of class 5 uses a model to show part of the solar system.
ball A
ball B
ball C
Ball A is the Moon.
It moves around ball B.
(a) Name ball B and ball C.
ball B
ball C
[1]
(b) Describe how the teacher moves ball B and ball C.
[2]
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18
17 Yuri draws his name on a piece of paper.
(a) He looks at his name in a mirror.
mirror
Yur i
Tick () the box next to the image Yuri sees in the mirror.
Yur i
Yur i
iruY
i r uY
[1]
(b) Complete these sentences about mirrors.
Rays of light from the object are
by the mirror.
We can see the image because the rays of light
.
[2]
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