Explain why nuclear fuel is classed as a non-renewable energy resource but is not a fossil fuel.

AQA GCSE Physics (8463) — 4.1.3 National and global energy resources · Explain · 4 marks · View as Markdown

Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).

Model answer (4 marks)

Nuclear fuel is a non‑renewable resource because it is finite and cannot be replenished while it is being used. The amount of uranium available will eventually be exhausted.

It is not a fossil fuel because fossil fuels (coal, oil and gas) are formed from ancient biological remains, whereas uranium is a mined mineral ore that does not originate from organic matter.

Examiner tips

Use the definition of non‑renewable – finite and not replenished during use.
Explain the difference in origin – uranium is a mineral, fossil fuels are organic.
Keep the answer concise and use the exact terminology.
Mention both points in separate sentences for clarity.

Common mistakes

Confusing ‘renewable’ with ‘sustainable’ or ‘recyclable’.
Saying ‘uranium is a fossil fuel’ or ‘fossil fuels are minerals’ – mixing up the definitions.
Leaving out the reason why nuclear fuel is non‑renewable (finite supply).

Mark scheme (4 marks)

Nuclear fuel cannot be replenished whilst it is being used / nuclear fuel will eventually run out / nuclear fuel is finite
This makes it non-renewable (because a non-renewable resource is one that cannot be replenished whilst it is being used)
Fossil fuels are coal, oil and gas (formed from ancient organic matter / biological remains)
Nuclear fuel (uranium) is not formed from ancient organic / biological remains / is a mined mineral ore, so it is not a fossil fuel

Key terms in this question

non-renewable · renewable energy resource · nuclear fuel