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Revision Questions

1. What is background radiation?

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2. What can be used to measure background radiation? And what units is radiaacitivity
measured in?

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3. What gas can radiation come from? And how does it vary across the UK?

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4. How do household alarms use radioactivity?

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8. What are the properties of x ­ rays or gamma rays?

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9. What is an isotope?

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10. What is half life?

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11. Explain how computer are used to analyse radioactive decay?

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12. What is radioactive…

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16. How are new buildings protected from radon gas?

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17. What unit of measurement is radon gas measured in?

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18. What are cosmic rays?

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19. How are the northern lights created?

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20. What is solar wind?

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