Background radiation is the low-level ionizing radiation that is constantly present in our environment.
Which of the following lists contains only natural sources of background radiation?
cosmic rays, radon gas from the ground, and medical scans
radon gas from the ground, cosmic rays, and food and drink
nuclear power generation, cosmic rays, and radon gas from the ground
medical scans, nuclear fallout, and cosmic rays
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.