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2 marksNature, Forms, and Sources of Energy

CAPE Environmental Science Unit 2 · 2012 · Paper 2 · Question 3(a)(i)

MODULE 2: Energy questions. Figure 3 presents energy output data for a developed country.

Define the term 'energy efficiency'.

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Other parts of this question

  1. 3(a)(ii)What percentage of this country's energy output is in some beneficial form? Show your working.[3 marks]
  2. 3(a)(iii)Assuming a total energy output of 1 x 10^15 BTU, how much energy is lost as unnecessary energy waste?[2 marks]
  3. 3(a)(iv)The country has a significant amount of energy lost unnecessarily. Suggest THREE ways in which this country could improve its energy efficiency.[6 marks]
  4. 3(b)(i)Define the term 'kinetic energy'.[1 mark]
  5. 3(b)(ii)With the use of a suitably labelled diagram, explain how wind energy is harnessed to produce electricity.[6 marks]

More practice: the rest of this paper · more Nature, Forms, and Sources of Energy questions · all CAPE Environmental Science Unit 2 past papers