Nuclear decay and nuclear energy – WJECGenerating power from nuclear fuels
Nuclear fission is the splitting of a radioactive nucleus to release energy. High-energy collisions between light nuclei can result in fusion, which releases energy.
Nuclear reactors use the heat from nuclear reactions in the nuclear fuel to boil water. Just as in conventional power stations, the steam from the boiling water makes a turbine spin, which in turn makes the generator turn.
Unlike conventional power stations, however, nuclear power stations do not release carbon dioxide, so they do not contribute to global warming while in use.
ionising radiationRadiation that is able to remove electrons from atoms or molecules to produce positively charged particles called ions. in the reactor itself is prevented from escaping by steel and concrete walls. This is important because radiationEnergy carried by particles from a radioactive substance, or spreading out from a source. can cause cancer. The waste from nuclear power stations is radioactive so it can be harmful too.
Plutonium is a waste product from nuclear reactors. It can be used to make nuclear bombs.