Background radiation is around us all of the time.
Give one natural source of background radiation.
Give one man-made source of background radiation.
Radiation dose is measured in sieverts (Sv). 1000 millisieverts (mSv)=1 sievert (Sv)1000\ \text{millisieverts (mSv)} = 1\ \text{sievert (Sv)}1000 millisieverts (mSv)=1 sievert (Sv).
A person receives a radiation dose of 4.5 mSv in one year.
Calculate this dose in sieverts.
40 exam-style questions on AQA GCSE Physics 4.3 Hazards and uses of radioactive emissions and of background radiation, covering 4.3.1 Background radiation, 4.3.2 Different half-lives of radioactive isotopes, and 4.3.3 Uses of nuclear radiation. Each one has a worked solution and a mark scheme showing where the marks go.