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Background radiation
The ionizing radiation we are exposed to all the time from natural and human-made sources in our environment.
Chain reaction
A chain reaction is a self-sustaining sequence of nuclear fission events caused by neutrons released from previous fissions.
Half-life
The half-life of a radioactive substance is the time taken for half of the unstable nuclei in a sample to decay.
Ionising Radiation
Radiation that can remove electrons from atoms or molecules, creating ions.
Mutation
A mutation is a random change in DNA that introduces new genetic variants (alleles).
Nuclear fission
Nuclear fission is the splitting of a heavy atomic nucleus into smaller nuclei, releasing energy and neutrons.
Nuclear waste
Nuclear waste is unwanted radioactive material produced by nuclear processes.
Radioactive decay
Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation.