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Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter

Energy Transfers

18 practice questions

Start practising (18 questions)

Practice questions

1–10 of 18

  1. Question 1

    1 mark · Easy

    State the main energy store in a stretched elastic band.

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  2. Question 2

    1 mark · Easy

    Which device transfers chemical energy directly to movement energy?

    1. A.A battery-powered torch
    2. B.A compressed spring toy car
    3. C.A solar panel
    4. D.A microphone
    Answer and check →

  3. Question 3

    1 mark · Easy

    State the principle of conservation of energy.

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  4. Question 4

    2 marks · Easy

    A kettle transfers 320 kJ of energy to water, and 40 kJ is wasted as heat to the air. Calculate the efficiency of the kettle. Give your answer as a percentage.

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  5. Question 5

    3 marks · Easy

    A student rubs their hands together on a cold day.

    (a)

    Describe the main energy transfer that occurs while rubbing hands.

    [1 mark]
    (b)

    Which energy store increases as the hands become warmer?

    [1 mark]
    (c)

    Explain why rubbing hands is not 100% efficient.

    [1 mark]
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  6. Question 6

    1 mark · Easy

    Which method of thermal energy transfer mostly explains why the handle of a metal spoon becomes hot when placed in hot soup?

    1. A.Conduction
    2. B.Convection
    3. C.Radiation
    4. D.Insulation
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  7. Question 7

    3 marks · Easy

    Describe a simple experiment you could carry out to show that air is a poor conductor of heat. Include the setup and an observation you would make.

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  8. Question 8

    3 marks · Easy

    A student is asked to explain how a woolly jumper helps to keep you warm on a cold day.

    (a)

    Name the process by which heat would escape without a jumper.

    [1 mark]
    (b)

    Describe how the wool reduces heat loss.

    [1 mark]
    (c)

    Name another common household use of a similar insulating principle.

    [1 mark]
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  9. Question 9

    1 mark · Normal

    Which method of thermal energy transfer does NOT require particles or matter to move at all?

    1. A.Conduction
    2. B.Convection
    3. C.Radiation
    4. D.Evaporation
    Answer and check →

  10. Question 10

    3 marks · Normal

    On a clear night, the temperature inside houses often drops even when windows and doors are closed and no air escapes.

    (a)

    Explain, using ideas of energy transfers, why the inside of the house cools down during a clear night.

    [3 marks]
    Answer and see the solution →