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1.2 Conservation and dissipation of energy

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Question 10

A model of a swinging pendulum includes the pendulum and its surroundings within the system boundary.

Which description is consistent with the model being a closed system?

[1]
A

The total energy in the model decreases when energy is transferred to less useful stores.

B

The model is closed only if energy remains in the same store throughout each swing.

C

Equal, non-zero amounts of energy enter and leave the model across its boundary.

D

Energy may move between stores within the model while its total energy stays constant.

Markscheme

1.2 Conservation and dissipation of energy Questions

  1. GCSE
  2. /Physics
  3. /1.2 Conservation and dissipation of energy

104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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