Question 1

Define the term energy return on investment (EROI).

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Question 2

A student compares two energy options and only discusses cost. Outline two other criteria that could be used to evaluate energy sources.

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Question 3

A drilling company proposes hydraulic fracturing near farmland that relies on groundwater wells. Outline two water-related risks of fracking.

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Question 4

A government proposes a large hydroelectric dam on a river that supports fisheries and farming downstream. Outline one advantage and one disadvantage of this dam.

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Question 5

Table 1 shows lifecycle greenhouse gas emissions for electricity from different sources. Identify the source with the highest emissions and the source with the lowest emissions.

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Question 6

A student says nuclear power is renewable because it does not emit carbon dioxide during operation. State whether this is correct and justify your answer.

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Question 7

Outline how electricity is generated in a nuclear power station.

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Question 8

Define the term renewable energy source.

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Question 9

Residents living near an oil refinery complain of breathing problems on still days. State one air pollutant linked to burning fossil fuels and one possible health effect.

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Question 10

A city is choosing between electricity from coal-fired power and natural gas. State one environmental impact linked to coal extraction.

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Question 11

Define the term nuclear fission.

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Question 12

A community near a coal mine is worried about orange-stained streams. Suggest how coal mining can pollute water in this way.

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Question 13

A planner says: “Wind and solar have low emissions, so they are always the best choice.” Outline one reason why an energy source with low emissions may still have disadvantages.

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Question 14

A coastal region installs large amounts of solar PV. Explain two reasons why solar PV alone may not meet electricity demand at all times, and suggest one solution.

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Question 15

A coal power station is blamed for acid rain damage to nearby forests. Outline how burning coal can lead to acid rain.

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Question 16

A wind farm is planned near a bird migration route. State one possible environmental concern and one way it could be reduced.

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Question 17

A town is considering geothermal heating but is far from plate boundaries. Explain why location matters for geothermal energy.

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Question 18

A reactor uses control rods as part of its safety system. Explain the role of control rods in a nuclear reactor.

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Question 19

A coastal nuclear plant uses seawater for cooling. Suggest one potential environmental impact of releasing warmer water back into the sea.

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Question 20

A country imports uranium fuel. Suggest one geopolitical or security concern linked to nuclear power.

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Topic 7.2: Energy Sources — Uses and Management Questions

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