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1.7 Energy, work and power

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Question 353

Which method of cooking food has the least impact on the environment?

A

Using a microwave oven powered by electricity from a coal-fired power station.

B

Using a solar cooker in direct sunlight.

C

Using a charcoal barbecue grill.

D

Using a kitchen range stove fueled by natural gas.

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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