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

Questions

1. 1. What is an energy transfer?

   • Energy moving from one object to another object.
   • Energy being used up until it disappears.
   • An object that has no energy.
   • An object making new energy out of nothing.
   Check

2. 2. A donkey eats grass in a field. Which energy chain shows the energy transfer?

   • grass → donkey
   • donkey → grass
   • donkey → Sun
   • grass → Sun
   Check

3. 3. Balloons filled with air float up into the sky as the wind blows them along. Which energy chain fits?

   • balloons → wind
   • wind → balloons
   • balloons → clouds
   • clouds → wind
   Check

4. 4. Meat is cooking over a campfire. Which energy chain shows the energy transfer?

   • meat → fire
   • fire → meat
   • meat → air
   • fire → wood
   Check

5. 5. A grandmother watches television. Which energy chain shows the energy transfer?

   • grandmother → television
   • chair → grandmother
   • television → grandmother
   • grandmother → chair
   Check

6. 6. Why does a block of ice melt when you hold it in your hand?

   • The ice gives heat energy to your hand.
   • Heat energy moves from your warm hand to the ice.
   • Your hand squeezes the ice into water.
   • Cold moves from the ice into your hand.
   Check

7. 7. A spinning top toy is spinning on the floor. Which form of energy makes it work?

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

8. 8. How does energy make a spinning top work?

   • Sound energy from the top makes it spin.
   • Heat energy is transferred from the top to your hand.
   • Movement energy is transferred from your hand to the top, so it spins.
   • The top makes its own energy.
   Check

9. 9. A solar water heater has panels on the roof. Which energy chain shows how the water gets hot?

   • water → solar panels → Sun
   • Sun → solar panels → water
   • solar panels → Sun → water
   • water → Sun → solar panels
   Check

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

    10. How long did the bead take to fall off at 60 °C?

    • 8 minutes
    • 10 minutes
    • 6 minutes
    • 12 minutes
    Check

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

    11. Why did the bead fall off the spoon?

    • The bead was too heavy for the spoon.
    • Heat energy moved from the water, along the spoon, and melted the petroleum jelly.
    • The water pulled the bead off.
    • The bead melted in the heat.
    Check

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

    12. Which energy chain shows the energy transfers in the bead investigation?

    • petroleum jelly → spoon → hot water
    • hot water → spoon → petroleum jelly
    • spoon → hot water → petroleum jelly
    • bead → hot water → spoon
    Check

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

    13. At which temperature did the bead take the longest to fall off?

    • 90 °C
    • 70 °C
    • 40 °C
    • 100 °C
    Check

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

    14. At which temperature did the bead fall off the quickest?

    • 40 °C
    • 60 °C
    • 90 °C
    • 100 °C
    Check

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

    15. What pattern do the results show?

    • The temperature made no difference.
    • The bead always took 8 minutes.
    • The hotter the water, the more time the bead took to fall off.
    • The hotter the water, the less time the bead took to fall off.
    Check

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

    16. Why did the bead fall off faster in hotter water?

    • Hotter water is heavier, so it pulls the bead off.
    • The bead melts in hot water.
    • Cold water transfers more heat energy than hot water.
    • Hotter water transfers more heat energy, so the jelly melts faster.
    Check

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

    17. Predict how long the bead would take to fall off if the water temperature is 30 °C.

    • about 14 minutes
    • about 12 minutes
    • about 2 minutes
    • about 8 minutes
    Check