Edexcel IGCSE Physics 7.10 Background Radiation Questions

Explain why background radiation is always present, then identify terrestrial sources such as rocks and radon and space sources such as cosmic rays.

Exam points

Explain that background radiation is always present and has no single obvious source.
Identify terrestrial sources such as rocks or radon and space sources such as cosmic rays.

[Maximum number: 1]

A material called granite is used as a work surface in a kitchen.

Figure for Question Edexcel IGCSE Physics 7.10 Background Radiation Questions question 1 — Edexcel IGCSE Physics

Granite is formed naturally and contains radioactive isotopes.

The granite work surface contributes to the background radiation in the kitchen.
Give another naturally occurring source of background radiation.

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Edexcel IGCSE Physics 7.10 Background Radiation Questions question 1