Question 1
The diagram shows part of a food web.
**(a)** Name the energy source for this food web.
**(a)** Name the energy source for this food web.
Primary Checkpoint. 2026. Science (0097). March - Paper 1
Question 2
The diagram shows part of a food web.
**(b)** The otter gains energy from the moorhen, frog, eel and trout.
Explain how the otter gains energy from these animals.
**(b)** The otter gains energy from the moorhen, frog, eel and trout.
Explain how the otter gains energy from these animals.
Question 3
The diagram shows part of a food web.
**(c)** The trout is a predator.
Circle **three** other words that describe the trout.
**(c)** The trout is a predator.
Circle **three** other words that describe the trout.
Question 4
The diagram shows part of a food web.
**(d)** Look at the pictures of some of the animals from the food web.
Use the pictures to complete the key.
Write the name of the animal for each of the five blank lines.
**(d)** Look at the pictures of some of the animals from the food web.
Use the pictures to complete the key.
Write the name of the animal for each of the five blank lines.
Question 5
The diagram shows part of a food web.
**(e)** Look at the diagram of the skeleton of the otter.
The otter and humans have similar respiratory systems.
Use the diagram to explain why.
**(e)** Look at the diagram of the skeleton of the otter.
The otter and humans have similar respiratory systems.
Use the diagram to explain why.
Question 6
Lily investigates changes of state.
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(a)** What property is Lily investigating?
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(a)** What property is Lily investigating?
Question 7
Lily investigates changes of state.
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(b)** Write down the **independent** variable in her investigation.
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(b)** Write down the **independent** variable in her investigation.
Question 8
Lily investigates changes of state.
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(c)** Write down **one** safety risk in her investigation.
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(c)** Write down **one** safety risk in her investigation.
Question 9
Lily investigates changes of state.
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(d)** Lily thinks she is investigating a physical change.
Tick (✓) to show if Lily is correct.
☐ yes ☐ no
Explain your answer.
She places 10 g of ice in a boiling tube with a thermometer.
She places the boiling tube into a beaker of hot water.
She records the temperature when the ice changes to water.
She repeats her investigation using butter, chocolate and wax.
**(d)** Lily thinks she is investigating a physical change.
Tick (✓) to show if Lily is correct.
☐ yes ☐ no
Explain your answer.
Question 10
Chen does an investigation.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
Look at the diagram.
**(a)** Complete the sentences.
Chen looks at the measurements for the water in the **measuring cylinder**.
The difference between the two measurements is ______ cm³.
Chen looks at the measurements on the **balance**.
The difference between the two measurements is ______ g.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
Look at the diagram.
**(a)** Complete the sentences.
Chen looks at the measurements for the water in the **measuring cylinder**.
The difference between the two measurements is ______ cm³.
Chen looks at the measurements on the **balance**.
The difference between the two measurements is ______ g.
Question 11
Chen does an investigation.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
Look at the diagram.
**(b)** What does Chen measure when he uses the balance?
Circle the correct answer.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
Look at the diagram.
**(b)** What does Chen measure when he uses the balance?
Circle the correct answer.
Question 12
Chen does an investigation.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
**(c)** Look at the diagram of the rock in the water.
Draw **one** arrow to show the direction of the force of gravity on the rock.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
**(c)** Look at the diagram of the rock in the water.
Draw **one** arrow to show the direction of the force of gravity on the rock.
Question 13
Chen does an investigation.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
**(d)** Explain why the rock sinks in the water.
Chen:
- pours 50 cm³ of water into a measuring cylinder
- puts the measuring cylinder on a balance
- adds a rock to the water.
The water level in the measuring cylinder is now 75 cm³.
**(d)** Explain why the rock sinks in the water.
Question 14
Scientists observe and classify different rocks.
**(a)** Look at the picture of a type of rock.
Complete the sentences.
This type of rock is ______ rock.
This is because ______ .
**(a)** Look at the picture of a type of rock.
Complete the sentences.
This type of rock is ______ rock.
This is because ______ .
Question 15
Scientists observe and classify different rocks.
**(b)** Look at the picture of a type of rock.
Complete the sentences.
This type of rock is ______ rock.
This is because ______ .
**(b)** Look at the picture of a type of rock.
Complete the sentences.
This type of rock is ______ rock.
This is because ______ .
Question 16
One similarity between boiling and evaporation is they both change a liquid into a gas.
Describe **two** differences between boiling and evaporation.
Describe **two** differences between boiling and evaporation.
Question 17
Blessy makes an electrical circuit.
**(a)** Complete the sentences to describe how to make this electrical circuit.
Use **three** switches and **four** lamps.
Use a ______ to provide electricity.
Connect the lamps in ______ .
**(a)** Complete the sentences to describe how to make this electrical circuit.
Use **three** switches and **four** lamps.
Use a ______ to provide electricity.
Connect the lamps in ______ .
Question 18
Blessy makes an electrical circuit.
**(b)** Which switches does Blessy close to make lamp **S** light?
Circle the correct answer.
**(b)** Which switches does Blessy close to make lamp **S** light?
Circle the correct answer.
Question 19
Blessy makes an electrical circuit.
**(c)** Which switches does Blessy close to make **only** lamp **P** and lamp **R** light?
Circle the correct answer.
**(c)** Which switches does Blessy close to make **only** lamp **P** and lamp **R** light?
Circle the correct answer.
Question 20
Look at the diagram of the Sun, the Earth and the Moon.
**(a)** Use the diagram to describe the movement of the Earth **and** the movement of the Moon.
Earth ______
Moon ______
**(a)** Use the diagram to describe the movement of the Earth **and** the movement of the Moon.
Earth ______
Moon ______
