Atomic StructureDiagram

Nuclear Fission vs Fusion

Part of Nuclear Fission & Fusion · GCSE GCSE Physics revision

This diagram covers Nuclear Fission vs Fusion within Nuclear Fission & Fusion for GCSE Physics. Revise Nuclear Fission & Fusion in Atomic Structure for GCSE Physics with 13 exam-style questions and 25 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 10 of 18 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

Topic position

Section 10 of 18

Practice

13 questions

Recall

25 flashcards

📊 Nuclear Fission vs Fusion

Split-panel diagram: left shows nuclear fission where a large uranium nucleus splits into two smaller nuclei releasing neutrons and energy; right shows nuclear fusion where two hydrogen nuclei merge into helium releasing a burst of energy

Figure 1: Fission (left) splits a heavy nucleus releasing neutrons that trigger a chain reaction; fusion (right) joins light nuclei releasing far more energy per kilogram.

Keep building this topic

Read this section alongside the surrounding pages in Nuclear Fission & Fusion. That gives you the full topic sequence instead of a single isolated revision point.

Comparing Fission and Fusion How It Works: Why Mass Converts to Energy The Power of the Nucleus Nuclear Fission Explained

Practice Questions for Nuclear Fission & Fusion

What is nuclear fission?

A. The joining of two small nuclei to form one larger nucleus
B. The spontaneous emission of an alpha particle from a nucleus
C. The splitting of a large nucleus into two smaller nuclei
D. The absorption of an electron by a nucleus

1 markfoundation

Explain what is meant by a chain reaction in nuclear fission.

2 marksstandard

Quick Recall Flashcards

What is nuclear fission?

The splitting of a large, unstable nucleus into two smaller nuclei, releasing energy and neutrons

What is nuclear fusion?

The joining of two small, light nuclei to form a larger nucleus, releasing energy

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Comparing Fission and Fusion

How It Works: Why Mass Converts to Energy