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

Chen is learning about the respiratory system.

Chen says,

**‘I think cats have similar respiratory systems to humans.’**

**(a)** What type of statement is this?

Circle the correct answer.

Chen is learning about the respiratory system.

Chen says,

**‘I think cats have similar respiratory systems to humans.’**

**(b)** Chen finds a diagram of the respiratory system of a cat on the internet.



Name organ **X**.

Chen is learning about the respiratory system.

Chen says,

**‘I think cats have similar respiratory systems to humans.’**

**(c)** The respiratory system helps to defend the body from infection.

Describe how.

The diagram shows a heavy box on a rough surface.



There is a force **F** between the box and the surface.

Oliver tries to pull the box with pulling force **P**.

Complete the table to show what happens as pulling force **P** increases.

| pulling force P in N | force F in N | what happens to the box |
| --- | --- | --- |
| 10 | 10 | ___ |
| 20 | 20 | ___ |
| 30 | ___ | the box just starts to move |
| 40 | 30 | ___ |

Ahmed makes a lemon volcano.

Ahmed:

- puts half a lemon onto a large plate
- puts a thermometer into the lemon
- measures the temperature of the lemon
- covers the lemon with sodium bicarbonate
- measures the temperature again.

Ahmed labels a picture to show his experiment and his results.



Complete the sentences about the lemon volcano investigation.

Use the picture to help you.

**(a)** The citric acid reacts with ___ .

Ahmed makes a lemon volcano.

Ahmed:

- puts half a lemon onto a large plate
- puts a thermometer into the lemon
- measures the temperature of the lemon
- covers the lemon with sodium bicarbonate
- measures the temperature again.

Ahmed labels a picture to show his experiment and his results.



Complete the sentences about the lemon volcano investigation.

Use the picture to help you.

**(b)** Ahmed observes ___ being made and the ___ increasing.

Ahmed makes a lemon volcano.

Ahmed:

- puts half a lemon onto a large plate
- puts a thermometer into the lemon
- measures the temperature of the lemon
- covers the lemon with sodium bicarbonate
- measures the temperature again.

Ahmed labels a picture to show his experiment and his results.



Complete the sentences about the lemon volcano investigation.

Use the picture to help you.

**(c)** New substances are made in the reaction so it is a ___ reaction.

Angelique draws diagrams to show how the appearance of the Moon in the Southern Hemisphere changes during its monthly cycle.

She completes four diagrams from the monthly cycle of the Moon.



Complete the table to show the appearance of the Moon for the **other** four diagrams.

(Shade the dark part of each Moon.)

| Moon | appearance |
| --- | --- |
| waxing crescent | ◯ |
| first quarter Moon | ◯ |
| waning gibbous | ◯ |
| third quarter Moon | ◯ |

Scientists count the number of eagles in one area in different years.

The table shows their results.

| year | number of eagles |
| --- | --- |
| 1930 | 650 |
| 1970 | 60 |
| 2000 | 655 |
| 2016 | 2000 |
| 2020 | 3000 |

**(a)** Farmers start to spray crops with a toxic substance to kill weeds in 1950.

The farmers stop spraying the crops with the toxic substance in 1972.

Scientists think that the toxic substance the farmers use also kills eagles.

Tick (✓) to show if the scientists are correct.

yes ☐ no ☐

Explain your answer. Use information from the table.

Scientists count the number of eagles in one area in different years.

The table shows their results.

| year | number of eagles |
| --- | --- |
| 1930 | 650 |
| 1970 | 60 |
| 2000 | 655 |
| 2016 | 2000 |
| 2020 | 3000 |

**(b)** Which type of scientific enquiry do the scientists use to **collect the data** in the table?

Circle the correct answer.

Scientists count the number of eagles in one area in different years.

The table shows their results.

| year | number of eagles |
| --- | --- |
| 1930 | 650 |
| 1970 | 60 |
| 2000 | 655 |
| 2016 | 2000 |
| 2020 | 3000 |

**(c)** Eagles are carnivores.

Explain how the toxic substance sprayed on the plants kills the eagles.

The table shows some statements about boiling and evaporation.

Tick (✓) the correct box to show if the statement is about:

- boiling only
- evaporation only
- both boiling and evaporation.

| | boiling only | evaporation only | both boiling and evaporation |
| --- | --- | --- | --- |
| change of state | ☐ | ☐ | ☐ |
| only happens on the surface | ☐ | ☐ | ☐ |
| makes bubbles | ☐ | ☐ | ☐ |
| only happens at one temperature | ☐ | ☐ | ☐ |

This question is about types of soil and how well plants grow.

**(a)** Complete the sentence.

Different types of soil are classified based on their clay, ___ and ___ content.

This question is about types of soil and how well plants grow.

**(b)** Mia and Blessy compare two types of soil to find out which is best for growing plants from seeds.

They:

- put soil type **A** in one container
- put soil type **B** in a different container
- sprinkle seeds onto each soil
- count how many seeds grow after two weeks.



Their investigation is **not** a fair test.

Suggest **two** ways to improve their investigation to make it a fair test.

Use the diagram to help you.

Safia investigates parallel circuits.

She uses a cell, a switch and two identical lamps.

**(a)** Complete the table by drawing the conventional symbol for each component.

| component | symbol |
| --- | --- |
| cell | |
| lamp | |
| open switch | |

Safia investigates parallel circuits.

She uses a cell, a switch and two identical lamps.

**(b)** Draw a parallel circuit diagram showing the cell and open switch connected to **two** lamps.

The two lamps are parallel with each other.

The switch turns on both lamps at the same time.

Use the conventional symbols.

Safia investigates parallel circuits.

She uses a cell, a switch and two identical lamps.

**(c)** Safia closes the switch and the lamps light up.

She adds an identical lamp parallel with the other two lamps.

What happens to the brightness of the lamps?

Parasites cause infectious diseases.

Write down **two** other causes of infectious disease.

Rajiv is learning about scientific models.

He uses clay, a shell and white glue.

He presses the shell into the surface of the clay and carefully removes it.

This makes a mould.



He pours the white glue into the mould and leaves it to harden.

He removes the hard white glue from the mould.



**(a)** What has Rajiv made a model of?

Rajiv is learning about scientific models.

He uses clay, a shell and white glue.

He presses the shell into the surface of the clay and carefully removes it.

This makes a mould.



He pours the white glue into the mould and leaves it to harden.

He removes the hard white glue from the mould.



**(b)** Rajiv made this model in one day.

Describe how Rajiv making his model is different to the real process.