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6.2 Uses and hazards

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Question 6
F

Radon is a radioactive gas that emits alpha particles. It can collect in the air inside some houses.

a.

A sealed alpha source is held 30 cm away from a person's arm. Explain why the alpha particles do not harm the person.

[2]
b.

Explain why breathing in radon gas is very hazardous, even though alpha particles cannot travel far.

[2]
c.

Suggest why the hazard from breathing in radon lasts longer than the hazard from standing near a sealed alpha source.

[1]
Markscheme

6.2 Uses and hazards Questions

  1. GCSE
  2. /Physics
  3. /6.2 Uses and hazards

48 exam-style questions on OCR GCSE Physics 6.2 Uses and hazards, covering 6.2.1 Contamination and irradiation, 6.2.2 Half-life and radiation hazards, 6.2.3 Medical uses of nuclear radiation, 6.2.4 Nuclear fission and chain reactions, and 6.2.5 Nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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