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1.7 Energy, work and power

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Question 25

A hydroelectric power station generates electricity. Water held behind a high dam flows downwards through pipes. The flowing water turns a turbine, causing it to spin, which drives a generator to produce electricity.

Which row gives the name of the energy store of the water held high behind the dam and the energy store of the spinning turbine?

A

Water behind the dam: gravitational potential; Spinning turbine: kinetic

B

Water behind the dam: gravitational potential; Spinning turbine: thermal

C

Water behind the dam: chemical; Spinning turbine: kinetic

D

Water behind the dam: chemical; Spinning turbine: thermal

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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