Which list only includes man-made (artificial) sources of background radiation?
cosmic rays, medical X-rays, nuclear power station emissions
radon gas, radiation from food and drink, cosmic rays
medical X-rays, radioactive fallout from nuclear weapons testing, nuclear power station emissions
rocks and soil, medical X-rays, radioactive fallout from nuclear weapons testing
484 exam-style questions on CIE IGCSE Physics 5.2 Radioactivity, covering 5.2.1 Background radiation and measuring count rate, 5.2.2a Alpha, beta and gamma emission, 5.2.2b Deflection and ionising effects of nuclear radiation, 5.2.3a Radioactive decay, 5.2.3b Effects of decay on the nucleus and decay equations, 5.2.4a Half-life, 5.2.4b Choosing isotopes for applications, and 5.2.5 Effects of ionising radiation and safety precautions. Each one has a worked solution and a mark scheme showing where the marks go.