In 2011, the Fukushima Daiichi nuclear power plant in Japan suffered a major accident resulting in the release of material into the atmosphere. This caused the background radiation levels in countries thousands of kilometres away to increase.
What was transported by wind in the atmosphere to these distant countries to cause this rise in background radiation?
α\alphaα-particles
β\betaβ-particles
γ\gammaγ-rays
radioactive isotopes
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.