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1.7.1a Energy stores and energy transfers

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Question 77

In a classic experiment demonstrating the first law of thermodynamics, a paddle wheel is rotated inside a well-insulated container of liquid by a falling weight, causing the temperature of the liquid to rise.

What fundamental conclusion can be drawn from this observation?

A

Temperature is a physical store of energy.

B

The liquid absorbs heat from the cooler surroundings.

C

Mechanical work done on a system can increase its internal energy.

D

Energy is not conserved in this process.

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1.7.1a Energy stores and energy transfers Questions

  1. IGCSE
  2. /Physics
  3. /1.7.1a Energy stores and energy transfers

229 exam-style questions on CIE IGCSE Physics 1.7.1a Energy stores and energy transfers. Each one has a worked solution and a mark scheme showing where the marks go.

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