Question 1

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 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

Define the term nuclear fission.

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Question 4

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 5

Outline how electricity is generated in a nuclear power station.

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Question 6

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 7

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

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Question 11

Define the term energy return on investment (EROI).

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Question 12

A school debates replacing diesel generators with biomass electricity using imported wood pellets. Explain why biomass is only considered carbon neutral under certain conditions.

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Question 13

A city installs rooftop solar on many buildings. Suggest one social or economic benefit of distributed rooftop solar compared with building one large solar farm outside the city.

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Question 14

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 15

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 16

A local community is concerned about radioactive waste from a new nuclear plant. Outline two challenges of managing high-level radioactive waste.

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Question 17

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

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Question 18

Table 1 shows lifecycle greenhouse gas emissions for electricity from different sources. Using the data, identify which source has the lowest emissions and state one conclusion about nuclear power based on the table.

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Question 19

Table 1 shows annual electricity output from three renewable sources in the same region. Using the data, identify which source produced the most electricity and calculate how much more it produced than the lowest source.

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Question 20

A country plans to switch some electricity generation from coal to natural gas. Explain why methane leakage can reduce the climate benefit of this switch.

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Topic 7.2: Energy Sources — Uses and Management Questions

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