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1 markElectricity Generation, Demand, and Management

CAPE Environmental Science Unit 2 · 2014 · Paper 2 · Question 3(b)(ii)

Table 2 provides specifications comparing natural gas and electric water heaters.

Calculate the annual savings gained from owning the type of water heater chosen in (b)(i).

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Other parts of this question

  1. 3(a)Copy the flow diagram and complete the blank spaces to show the energy transformations.[3 marks]
  2. 3(b)(i)State which type of water heater is cheaper to operate.[1 mark]
  3. 3(b)(iii)Compare the performance of each water heater based on economic and energy conservation issues using the data in Table 2.[6 marks]
  4. 3(c)(i)Describe the trend illustrated in Figure 4.[3 marks]
  5. 3(c)(ii)Give TWO reasons to explain how EACH of the following factors may produce the trend in petroleum prices seen in Figure 4: technological limitations,…[6 marks]

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