Lesson 4.3.2.1

4.3.2.1 Internal energy Quiz: AQA Physics, Unit 3

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.3.2.1, Internal energy: 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 3: Particle model of matter, written with Revision Ninja.

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The 20 questions

  1. What two types of energy make up the internal energy of a system?

    • Electrical and magnetic
    • Kinetic and potential
    • Thermal and radiant
    • Chemical and nuclear

  2. What is the usual SI unit of internal energy?

    • Watt (W)
    • Newton (N)
    • Joule (J)
    • Pascal (Pa)

  3. How does heating a system affect the energy stored within its particles?

    • Does not change energy
    • Destroys particle energy
    • Decreases particle energy
    • Increases particle energy

  4. What does heating a system do to its particles' energy?

    • Removes mass
    • Decreases
    • Stays constant
    • Increases

  5. Which two types of energy make up the internal energy of a system?

    • Kinetic and potential
    • Electrical and magnetic
    • Chemical and thermal
    • Nuclear and elastic

  6. Why does a hotter object have greater internal energy than a cooler one?

    • Fewer total particles
    • Higher kinetic energy
    • Lower potential energy
    • Greater mass density

  7. Between two identical blocks at different temperatures, which has greater internal energy?

    • Warmer block
    • Cooler block
    • Lighter block
    • Both are equal

  8. If two samples are at the same temperature but one has double the mass, which has more internal energy?

    • Smaller sample
    • Both are equal
    • Larger sample
    • Neither has any

  9. What happens to the internal energy of a hot drink as it cools down?

    • Increases
    • Decreases
    • Stays constant
    • Doubles

  10. Why is internal energy not the same thing as temperature?

    • Temperature is total energy
    • Mass has no effect
    • Depends on mass
    • They use different units

  11. What happens to water's internal energy when an electric heater is switched on inside it?

    • Decreases
    • Reverses
    • Increases
    • Stays constant

  12. What happens to internal energy when a substance changes state at constant temperature?

    • Changes
    • Becomes negative
    • Drops to zero
    • Stays constant

  13. What is the change in internal energy when 100 J of energy is supplied and nothing else changes?

    • -100 J
    • +1000 J
    • 0 J
    • +100 J

  14. Which process increases a system's internal energy without heating it?

    • Evaporating
    • Expanding freely
    • Doing work
    • Cooling down

  15. What type of energy do particles in a solid possess despite being locked in place?

    • Potential only
    • Kinetic only
    • Chemical only
    • Kinetic and potential

  16. Why does a gas's internal energy increase when heated in a sealed container?

    • Potential energy drops
    • Mass decreases
    • Particles vanish
    • Kinetic energy increases

  17. Which two quantities both increase when a system's particles move faster on average?

    • Weight and mass
    • Internal energy and temperature
    • Mass and volume
    • Density and pressure

  18. On a heating graph for a solid, what does a rising temperature indicate?

    • Decreasing internal energy
    • Zero particle motion
    • Constant internal energy
    • Increasing internal energy

  19. What is the term for energy stored inside a system by its particles?

    • Kinetic energy
    • Internal energy
    • Thermal radiation
    • Chemical energy

  20. Which factor besides temperature determines the total internal energy of a system?

    • Surface area
    • Number of particles
    • Container colour
    • External pressure

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