#### Fission - Widely used method in nuclear power plants - Involves splitting atomic nuclei, like uranium-235 or plutonium-239. - Atomic nuclei are bombarded with neutrons, becoming unstable and splitting into smaller nuclei. Releases a large amount of energy. - Heat generated by fission warms a cooling agent. Cooling agent can be water, liquid metal, or molten salt. - Heated cooling agent produces steam. Steam turns turbines to generate electricity.