Learning objective

(Physics only) Explain why fusion is difficult to use as an energy source on Earth.

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At a glance

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Topic

Nuclear fission and fusion

Subtopic

Nuclear fusion (physics only)

AQA GCSE PhysicsAtomic structure

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Understand this objective

Short explanation

Within Nuclear fusion (physics only), this learning objective asks you to (physics only) explain why fusion is difficult to use as an energy source on earth. Focus on the approved ideas physics only and connect them clearly to Nuclear fission and fusion. A strong response should state the relevant particle, radiation, isotope, decay, half-life or nuclear-equation idea, then explain how it answers the exact command word. Avoid swapping nearby concepts such as atomic number and mass number, isotope and ion, alpha, beta and gamma radiation, or contamination and irradiation. This is a Physics-only point, so keep the answer tied to the AQA Physics specification.

Key concepts

nuclear fusionenergy source of stars

Why it matters

This objective helps connect Nuclear fusion (physics only) to exam-style questions, flashcards, and revision notes for Nuclear fission and fusion.

Common mistakes

1 linked

Misunderstanding Fusion Conditions: Emphasize that fusion requires very high temperatures and pressures to overcome electrostatic repulsion between nuclei.

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