Lesson 6.1.1.2

6.1.1.2 Changes in energy Quiz: AQA Combined Science, Unit 18

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 6.1.1.2, Changes in energy: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 18: Energy, written with Revision Ninja.

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The 20 questions

  1. Which equation is used to calculate kinetic energy?

    • Ek = 0.5mv^2
    • Ek = mcΘ
    • Ek = mgh
    • Ek = 0.5ke^2

  2. Which equation is used to calculate elastic potential energy?

    • Ee = 0.5mv^2
    • Ee = mgh
    • Ee = mcΘ
    • Ee = 0.5ke^2

  3. Which equation gives gravitational potential energy?

    • Ep = Q I
    • Ep = k e^2
    • Ep = 0.5 m v^2
    • Ep = m g h

  4. What is the unit of kinetic energy?

    • Newton
    • Watt
    • Joule
    • Ohm

  5. What is the unit of spring constant?

    • Joule per metre
    • Newton per second
    • Newton per metre
    • Metre per second

  6. In the gravitational potential energy equation, what does g represent?

    • Gravitational field strength
    • Gravitational force
    • Ground resistance
    • Gram mass

  7. Which quantity in the elastic energy equation is measured in metres?

    • Extension
    • Spring constant
    • Mass
    • Speed

  8. What must not be exceeded for the elastic potential energy equation to apply?

    • Thermal limit
    • Maximum mass
    • Limit of proportionality
    • Breaking point

  9. A 2 kg object moves at 3 m/s. What is its kinetic energy?

    • 9 J
    • 18 J
    • 6 J
    • 3 J

  10. A spring has a spring constant of 40 N/m and an extension of 0.05 m. What is its elastic potential energy?

    • 0.5 J
    • 2 J
    • 0.05 J
    • 0.0025 J

  11. A 5 kg object is raised 4 m on a planet with g = 10 N/kg. What is its gravitational potential energy gain?

    • 50 J
    • 200 J
    • 2000 J
    • 20 J

  12. If the speed of an object doubles, by what factor does its kinetic energy change?

    • No change
    • Eight times
    • Four times
    • Two times

  13. If the extension of a spring doubles within its limit, by what factor does its elastic energy change?

    • Half
    • Eight times
    • Four times
    • Two times

  14. A 1200 kg car travels at 10 m/s. What is its kinetic energy?

    • 120000 J
    • 12000 J
    • 6000 J
    • 60000 J

  15. A 0.2 kg ball is raised 3 m, with g = 10 N/kg. What is the gain in gravitational store?

    • 6 J
    • 60 J
    • 0.6 J
    • 15 J

  16. At the same extension, what change would double the stored elastic energy?

    • Doubling mass
    • Halving extension
    • Doubling spring constant
    • Halving spring constant

  17. Object A has mass 2 kg at 6 m/s. Object B has mass 4 kg at 3 m/s. Which has greater kinetic energy?

    • Both have 18 J
    • Both have 36 J
    • A, with 36 J against 18 J for B
    • B, with 36 J against 18 J for A

  18. A 0.5 kg object speeds up from 10 m/s to 20 m/s. What is the change in its kinetic energy?

    • 75 J
    • 25 J
    • 50 J
    • 100 J

  19. Which expression gives height when gravitational potential energy, mass and g are known?

    • h = Ep + m g
    • h = Ep x m x g
    • h = m g / Ep
    • h = Ep / (m g)

  20. A 10 N/m spring stretched 0.2 m is compared with a 40 N/m spring stretched 0.1 m. Which stores more elastic energy?

    • Both store equal energy, 0.2 J
    • The 40 N/m spring, with 0.4 J
    • The 10 N/m spring, with 0.4 J
    • The 40 N/m spring, with 0.1 J

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