Which statement best describes background radiation?
Radiation that is only produced by nuclear power stations.
Low-level ionising radiation that is always present in the environment around us.
Radiation that only exists in outer space.
High-level radiation used in medical treatments to kill cancer cells.
44 exam-style questions on CIE IGCSE Physics 5.2.1 Background radiation and measuring count rate. Each one has a worked solution and a mark scheme showing where the marks go.