Science 4 · Unit 2: Energy · Cambridge Primary Science Stage 4

Questions

1. 1. A light bulb is switched on. Which energy change happens in the bulb?

   • electrical energy → light energy
   • light energy → electrical energy
   • sound energy → light energy
   • movement energy → electrical energy
   Check

2. 2. A light bulb gives out light energy. Which other form of energy does it give out?

   • heat energy
   • movement energy
   • stored energy
   • sound energy
   Check

3. 3. An electric kettle boils water. Which energy change happens?

   • electrical energy → heat energy and sound energy
   • heat energy → electrical energy
   • sound energy → electrical energy
   • light energy → movement energy
   Check

4. 4. Look at the hands rubbing together fast. Which energy change happens?

   • heat energy → movement energy
   • movement energy → heat energy
   • movement energy → light energy
   • electrical energy → heat energy
   Check

5. 5. Someone knocks on a door. Which energy change happens?

   • sound energy → movement energy
   • movement energy → light energy
   • movement energy → sound energy
   • heat energy → sound energy
   Check

6. 6. A pot of water is heated on a gas stove until steam comes off. Which form of energy is transferred to the water?

   • heat energy
   • sound energy
   • light energy
   • electrical energy
   Check

7. 7. A man uses an electric drill to make a hole in a wall. Which energy change happens in the drill?

   • movement energy → electrical energy
   • electrical energy → movement energy
   • light energy → movement energy
   • sound energy → electrical energy
   Check

8. 8. The drill is also very noisy. Where does that sound energy go?

   • back into the plug
   • into the surrounding environment
   • It disappears.
   • into the man's hands as electricity
   Check

9. 9. An electric fan is switched on. Which energy change happens?

   • electrical energy → movement energy
   • movement energy → electrical energy
   • electrical energy → light energy
   • heat energy → movement energy
   Check

10. 10. A boy jumps up and down on a trampoline. Where does the energy go when he lands?

    • nowhere, it is used up
    • into the trampoline, which stretches and bounces him back up
    • into the boy's shoes as light energy
    • into the Sun
    Check

11. 11. A sunflower grows in the sunshine. Which energy does the plant take in from the Sun to grow?

    • sound energy
    • light energy
    • electrical energy
    • movement energy
    Check

12. 12. True or false: When energy is transferred, its form can change.

    • True
    • False
    Check

13. 📖 This question is about a text that students read in the app.

    13. Why does Vikal rub his hands together?

    • to warm them up, because rubbing changes movement energy into heat energy
    • to clean them
    • to make them dry
    • to make light energy
    Check

14. 📖 This question is about a text that students read in the app.

    14. Which energy change makes the classroom light work?

    • sound energy changes into light energy
    • heat energy changes into electrical energy
    • light energy changes into electrical energy
    • electrical energy changes into light energy
    Check

15. 📖 This question is about a text that students read in the app.

    15. Which energy chain shows the energy changes in the teacher's computer?

    • heat energy → electrical energy
    • electrical energy → light energy and sound energy
    • light energy → electrical energy
    • sound energy → movement energy
    Check

16. 📖 This question is about a text that students read in the app.

    16. Where does Vikal get energy from to play football?

    • from the classroom light
    • from rubbing his hands
    • from the banana he ate at break
    • from the bell
    Check

17. 📖 This question is about a text that students read in the app.

    17. Which energy chain shows how Vikal is able to kick the ball?

    • bell → Vikal → ball
    • ball → Vikal → banana
    • Vikal → banana → ball
    • banana → Vikal → ball
    Check

18. 📖 This question is about a text that students read in the app.

    18. Which form of energy tells Vikal that break has ended?

    • light energy
    • heat energy
    • sound energy
    • electrical energy
    Check

19. 📖 This question is about a text that students read in the app.

    19. Why is Vikal able to hear the bell?

    • The bell is right next to his ear.
    • Sound energy travels from the bell through the air to his ears.
    • His friends tell him that break has ended.
    • Light energy from the bell reaches his eyes.
    Check