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1.7 Energy, work and power

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Question 415
a.

State the principle of conservation of energy.

[2]
b.

A toy robot is powered by a battery. The robot walks across a flat table and occasionally shines a small LED spotlight.

Complete the sentences about energy transfers in the toy robot:

(i) The type of energy stored in the battery is __________ energy.

(ii) The type of energy possessed by the moving robot is __________ energy.

(iii) When the LED spotlight shines, energy is transferred to the surroundings as __________ energy.

[3]
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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