4.4.3.1

4.4.3.1 Background radiation

4.4.3.1 Background radiation

Content

Background radiation is around us all of the time. It comes from:

  • natural sources such as rocks and cosmic rays from space
  • man-made sources such as the fallout from nuclear weapons testing and nuclear accidents.
  • The level of background radiation and radiation dose may be affected by occupation and/or location.
  • Radiation dose is measured in sieverts (Sv)
  • 1000 millisieverts (mSv) = 1 sievert (Sv)
  • Students will not need to recall the unit of radiation dose.


WS 4.4 -Use prefixes and powers of ten for orders of magnitude (eg tera, giga, mega, kilo, centi, milli, micro and nano).


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