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P6 (WHAT IS?, Background radiation, Measuring radioactivity, DECAY) -…
P6
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Background radiation
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Origins
Radon
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When we breathe in alpha particles, alpha radiation reaches our lung tissue
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Food
Foods high in potassium, e.g bananas, are very slightly radioactive
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Measuring radioactivity
Geiger-miller tube
Each time radiation is absorbed it transmits an electrical impulse to the machine producing a clicking sound
The more clicks per second, the more radioactive
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