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  • Created by: Catherine
  • Created on: 27-04-12 18:11

Topic - Radioactivity

We are exposed to background radiation. Most of it is natural; the rest usually comes from medical sources such as X-rays. Only 1% comes from the nuclear industry. Radiation comes from unstable nuclei. The three types of radiation are:



and gamma

They are all dangerous, some more than others. Our biggest source of background radiation is radon. It is a gas which comes from the ground. Radon detectors are available and simple measures can remove the gas from houses. Alpha particles are helium nuclei. They are stopped by paper or a




This is great, thanks!

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