Question 1:

Renewable energy resources are those that can be replenished naturally over a short timescale.

• A. Coal, oil, gas → All non-renewable.

• B. Wind, wave, nuclear → Wind and wave are renewable, but nuclear is not (uranium is finite).

• C. Tidal, hydroelectric, gas → Tidal and hydroelectric are renewable, but gas is non-renewable.

• D. Biomass, geothermal, wind → All are renewable (biomass can be regrown, geothermal is continuously produced, wind is replenished by the Sun's uneven heating).

Answer: D. Biomass, geothermal, wind

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 2:

The correct answer is:

B. Oil

• Coal is a solid fossil fuel.

• Oil (petroleum) is a liquid fossil fuel.

• Gas (natural gas) is a gaseous fossil fuel.

• Hydroelectric is not a fossil fuel — it’s a renewable energy source.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 3:

The energy resource that is not that efficient and only works during the day (not at night) is:

Solar power (photovoltaic or solar thermal).

• It requires sunlight to generate electricity, so it cannot produce energy at night without energy storage (like batteries).

• Typical solar panel efficiency is around 15–22%, which is relatively low compared to some other sources.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 4:

The energy resource that involves getting energy from hot rocks underground is:

Geothermal energy

• Heat from hot rocks deep underground is used to produce steam, which drives turbines to generate electricity.

• This is a renewable and reliable energy source, available 24/7 regardless of weather or time of day.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 5:

The energy resource that uses the gravitational pull of the Moon and Sun on the sea is:

Tidal energy

• The gravitational pull of the Moon (and to a lesser extent, the Sun) causes the regular rise and fall of sea levels — tides.

• Tidal energy systems (e.g., tidal barrages or tidal turbines) capture the kinetic or potential energy of moving water caused by these tidal changes.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 6:

The energy resource that needs a dam wall to be built across a river is:

Hydroelectric energy

• A dam stores water in a reservoir. When water is released, it flows through turbines, converting gravitational potential energy into kinetic energy, then into electrical energy.

• This is a renewable energy source, though building dams can have significant environmental and social impacts.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 7:

The energy resource that uses photovoltaic cells to produce electricity is:

Solar energy

• Photovoltaic (PV) cells convert sunlight directly into electrical energy through the photovoltaic effect.

• This is a renewable energy source, though it is intermittent (only works during daylight hours) and efficiency can be affected by weather and location.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 8:

The disadvantage of wind turbines from the options given is:

C. The power output of one turbine is much lower than a coal power station.

• A single wind turbine typically produces around 2–5 MW of power, whereas a coal power station generates hundreds to thousands of MW.

• Therefore, many wind turbines are needed to match the output of one coal plant, requiring more land and infrastructure.

The other options are advantages (A, B) or incorrect (D — wind turbines are not much cheaper per unit of power output than a coal station; initial costs can be high).

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 9:

The option that does not release CO₂ into the environment is:

D. Nuclear fuel

• Nuclear power plants use uranium (or other nuclear fuels) in fission reactions to generate heat, which produces steam to turn turbines.

• This process does not involve combustion, so no carbon dioxide (CO₂) is emitted during electricity generation.

In contrast:

• Coal, oil, and gas are fossil fuels — burning them releases CO₂ into the atmosphere.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 10:

From the options given, the easiest and safest to store near a power station is:

A. Coal

• Coal can be stored in open piles or silos near the power station. It is solid, non-flammable under normal conditions (though coal dust can be a fire hazard if not managed), and does not require high-pressure or cryogenic containers.

• Oil requires leak-proof tanks and fire safety precautions.

• Gas (natural gas) requires high-pressure tanks or cooling to liquefy (LNG), and poses explosion risks.

• Nuclear fuel requires heavily shielded, secure, and regulated storage due to radiation hazards.

Therefore, coal is generally simpler and safer to store in large quantities near a plant.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.