Granite bedrock is a well-known source of terrestrial background radiation. Identify one other natural source of background radiation (excluding radiation originating directly from rocks or soil).
Commercial nuclear power plants rely on the fission of heavy, unstable nuclei. State the name of one specific isotope commonly used as the primary fuel in these fission reactors.
The heat required to generate steam in a nuclear power plant comes from a sustained, regulated reaction. Describe the physical process of a controlled nuclear fission chain reaction within a reactor core.
Stellar nucleosynthesis and future fusion reactors, such as tokamaks, rely on the fusion of light elements. Explain, in terms of mass and energy, how the process of nuclear fusion leads to the release of energy.
A key argument for some alternative nuclear technologies is that their byproducts have significantly shorter half-lives than traditional high-level waste. Explain the environmental or safety advantages of radioactive waste having a shorter half-life.
16 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.