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Fission and fusion

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Question 16

In a nuclear reactor, uranium-235 nuclei undergo fission, releasing energy.

a.

Describe what happens to a uranium-235 nucleus after it absorbs a slow-moving neutron.

[2]
b.

Explain the role of the moderator in the reactor vessel.

[2]
c.

Explain how the control rods are used to manage the rate of the chain reaction.

[2]
d.

State the main form of energy carried away by the daughter nuclei and neutrons immediately after the fission reaction.

[1]
e.

The reactor vessel is enclosed in thick concrete shielding. Explain how this shielding improves radiation safety for workers.

[1]

Fission and fusion Questions

  1. IGCSE
  2. /Physics
  3. /Fission and fusion