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The energy released from nuclear fission in the reactor core is used to heat water to create steam under high pressure.
This steam is harnessed to drive turbines making them spin very quickly, at around 25 rotations per second.
An electric generator converts this kinetic energy into electricity, which is then transported to your home through the National Grid.
Sea or river water is used to cool the steam, condensing it back into water. The water is re-used in this cycle time and time again.
UP FOR A BIG CHALLENGE?
How about keeping a nuclear reactor running night and day?
Try your hand at our Nuclear Reactor Simulator