Person 1 lives at sea level in an area of clay and works indoors. Person 2 lives high in the mountains in an area of granite and works outdoors. Which statement about their yearly radiation dose is correct?
Person 1 receives the larger dose, because buildings trap radon gas indoors
Both receive the same dose, because background radiation is the same everywhere
Person 2 receives the smaller dose, because mountain air contains less radon gas
Person 2 receives the larger dose, because of both their location and their work
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.