Primary Checkpoint. 2026. Science (0097). March - Paper 2

Question 1

Look at the diagram of an organ system in a horse.

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**(a)** Name this organ system.

Question 2

Look at the diagram of an organ system in a horse.

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**(b)** The diagram of the organ system in a horse is a scientific model.

Write down **one** reason why scientists use models.

Question 3

Look at the diagram of an organ system in a horse.

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**(c)** Yuri records the heart rate of five horses.

| horse | heart rate in beats per minute |
| --- | --- |
| **A** | 35 |
| **B** | 41 |
| **C** | 29 |
| **D** | 32 |
| **E** | 38 |

Calculate the mean heart rate for the five horses.

Show your working.

mean heart rate ______ beats per minute

Question 4

Look at the diagram of an organ system in a horse.

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**(d)** When horses move faster their heart rate increases.

Explain why heart rate needs to increase when horses move faster.

Question 5

Angelique observes what happens when different solids are mixed with acid.

Look at her results.

| solid | temperature of acid at start in °C | temperature of acid after adding the solid in °C | gas produced? |
| --- | --- | --- | --- |
| **A** | 20 | 10 | no |
| **B** | 20 | 30 | no |
| **C** | 20 | 15 | yes |
| **D** | 20 | 25 | yes |
| **E** | 20 | 20 | no |

**(a)** Which solid does **not** react with acid?

Give **two** reasons for your answer.

solid ______

reason 1 ______

reason 2 ______

Question 6

Angelique observes what happens when different solids are mixed with acid.

**(b)** Angelique makes sodium acetate by adding sodium bicarbonate to acetic acid.

Carbon dioxide and water are also made.

Write down the **reactants** in this reaction.

Question 7

Force diagrams show the size and direction of different forces.

**(a)** A box is on a table.

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Describe the effect these **two** forces have on the box.

Question 8

Force diagrams show the size and direction of different forces.

**(b)** A car is moving along a road.

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Describe the effect these **two** forces have on the **moving** car.

Question 9

Carlos investigates thermal conductivity.

Look at the diagram of his experiment.

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Carlos records the time it takes for each metal ball to fall off each spoon.

**(a)** Write down **two** variables Carlos keeps the same to make his experiment fair.

1 ______

2 ______

Question 10

Carlos investigates thermal conductivity.

Look at the diagram of his experiment.

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Carlos records the time it takes for each metal ball to fall off each spoon.

**(b)** Carlos writes his results in a notebook.

Look at his results.

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Complete his table of results.

| metal spoon | time taken for the metal ball to drop off the spoon in seconds |
| --- | --- |
| aluminium | ______ |
| brass | ______ |
| copper | ______ |
| iron | ______ |

Question 11

Carlos investigates thermal conductivity.

Look at the diagram of his experiment.

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Carlos records the time it takes for each metal ball to fall off each spoon.

Carlos's results: aluminium 25 s, brass 72 s, copper 43 s, iron 120 s.

**(c)** Circle the best **conclusion** using these results.

all metals are good thermal conductors
all metals are poor thermal conductors
aluminium is the best thermal conductor
brass is the best thermal conductor

Question 12

Safia draws part of the rock cycle.

**(a)** Look at the diagram that shows the formation of **sedimentary rock**.

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Complete the label on the diagram to name the process that forms sedimentary rock.

Question 13

Safia draws part of the rock cycle.

**(b)** Look at the diagram that shows the formation of **igneous rock**.

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Complete the label on the diagram to name the process that forms igneous rock.

Question 14

Safia draws part of the rock cycle.

**(c)** Look at the diagram.

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Write down the type of rock being formed in the diagram.

Question 15

Changes happen during puberty in humans.

**(a)** Tick (✓) **two** sentences that describe the correct changes during puberty in humans.

- Hips get wider in girls. ☐
- Shoulders get wider in girls only. ☐
- Skin becomes oily in boys only. ☐
- Underarm hair grows in both boys and girls. ☐

Question 16

Changes happen during puberty in humans.

**(b)** During puberty, the height of girls and boys increases rapidly.

The graph shows the height of a boy from 11 to 18 years of age.

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When does the height of the boy increase most rapidly?

Circle the correct answer.

from 11 years to 12 years
from 12 years to 13 years
from 14 years to 15 years
from 16 years to 17 years

Question 17

Priya collects information about the phases of the Moon.

| date | percentage % of Moon visible |
| --- | --- |
| 27 April | 50 |
| 4 May | 0 |
| 11 May | 50 |
| 19 May | 100 |
| 27 May | 50 |
| 3 June | 0 |

**(a)** Name the phase of the Moon when 100% of the Moon is visible.

Question 18

Which letter shows the phase of the Moon on 27 May?

Question 19

Priya collects information about the phases of the Moon.

| date | percentage % of Moon visible |
| --- | --- |
| 27 April | 50 |
| 4 May | 0 |
| 11 May | 50 |
| 19 May | 100 |
| 27 May | 50 |
| 3 June | 0 |

**(c)** Predict the percentage of the Moon visible on 15 May using the table.

Write down a reason for your answer.

prediction ______ %

reason ______

Question 20

The diagram shows a food web in a grassland habitat.

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**(a)** Write down **one** complete food chain from this food web that contains the warthog.