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6.5 Uses and dangers of radioactivity

6.5 Uses and dangers of radioactivity

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Question 48

Use words from the box to complete the sentences about the control and safety of nuclear fission within a nuclear power reactor.

boroncontrol rodscoolant
fastmoderatorslow
turbine
a.

To sustain a controlled fission chain reaction, a .......... is used to reduce the kinetic energy of fission neutrons so they can be captured by uranium-235 nuclei.

[1]
b.

The rate of reaction is managed by adjusting the depth of the .......... which absorb excess neutrons to prevent an uncontrolled reaction.

[1]
c.

The thermal energy produced by fission is transferred away from the reactor core by the .......... to eventually turn steam turbines.

[1]
Markscheme

6.5 Uses and dangers of radioactivity Questions

  1. GCSE
  2. /Physics
  3. /6.5 Uses and dangers of radioactivity

94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.

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