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1.7 Energy, work and power

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Question 54

Different types of power stations use different energy resources.

a.

Identify which of the five power station types matches each of the three energy resources listed below.

Energy Resources:

  • Moving air
  • Water stored at high elevation behind a dam
  • Solar radiation

Power Station Types:

  • Wind farm
  • Geothermal power station
  • Hydroelectric power station
  • Solar photovoltaic (PV) farm
  • Coal-fired power station
[3]
b.

The list below describes some of the stages of generating electricity in a geothermal power station, but they are not in the correct order:

  • A: Steam drives the turbine.
  • B: Water absorbs thermal energy from hot rocks to become steam.
  • C: Electricity is generated.
  • D: The turbine turns the generator.

Complete the flowchart sequence below by identifying the correct letter (A, B, C, or D) for each blank box:

  1. Cold water is pumped deep underground.
  2. →\rightarrow→ [ Box 1 ]
  3. High-pressure steam rises to the surface.
  4. →\rightarrow→ [ Box 2 ]
  5. →\rightarrow→ [ Box 3 ]
  6. →\rightarrow→ [ Box 4 ]
[4]
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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