radiation dose + background radiation
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5 Terms
1
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what is radiation dose?
a measure of the risk caused by exposing the body to ionising radiation
2
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what is the yearly radiation dose limit for a person?
20 mSv
3
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what is radiation dose measured in?
Sv
sieverts
4
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what is 1 Sv equal to?
1000 mSv
5
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what are sources of background radiation?
radioactive rocks in the Earth's crust
cosmic space rays
nuclear fallout
nuclear accidents
Note 
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