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P2 - Radioactivity by Mind Map: P2 - Radioactivity
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P2 - Radioactivity

Where does it come from?

unstable atomic nucleus

background radiation

Dangers

All are dangerous

Can cause cancer

Disposal causes problems

Protection

Lead apron

Film monitoring badges

Lead glass screens

How long does a radioactive material last?

Decays over time

half-life is time for half the atoms to decay

half-lives are different for different materials

Uses (7)

radioactive tracers

carbon dating

thickness monitoring

cancer treatment

checking welds

sterilising food and medical equipment

smoke alarms

Types

Alpha

Beta

Gamma