03. Background radiation

What are natural sources of radiation?

Radon from rocks + soil, food, cosmic rays, ground and buildings

What are artificial sources of radiation?

Medical, fallout from nuclear weapons testing

Why is the fact that the experiment was in swansea important?

Different places have different amounts of background radiation

Where is most background radiation from?

Natural sources

Why is radon a problem?

Natural source, its found in gases and easily breathed in

What do maps of radon gas show?

Different parts of the country have different levels of radon

What would someone living in a high radon gas exposure area need to ensure?

Floors are well sealed and good ventilation

Why do aircrew receive increased radiation doses?

Cosmic rays -> less atmosphere for protection