Nuclear Fission - Uncontrolled Chain Reaction

Physics: Edexcel IGCSE, topic 7.2.7

Nuclear Fission - Uncontrolled Chain Reaction

If nuclear fission is not controlled, then the rate of nuclear fission can become faster and faster. This starts a chain reaction where each stage of fission produces more and more energy. This could lead to an explosion.

Atom bombs

Atom bombs use these chain reactions to create large explosions and release lots of energy.

Test yourself on Nuclear Fission - Uncontrolled Chain Reaction

Which of these is a possible fuel for an atom bomb?
Which of the following are true of nuclear fission?

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