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Nuclear reactor
nuclear fission
core
You have to build a nuclear reactor which is an assembly of nuclear fuel and a moderator, which enables a chain fission reaction to start and continue, which releases thermal energy.
The fission happens in the fuel, which is usually in fuel rods inside the reactor. The rods are spaced at a particular distance apart and fill the reactor.
Nuclear fission in a nuclear reactor is initiated by bombarding uranium or plutonium atoms with neutrons, causing them to split and release more neutrons, which then continue the chain reaction.
Nuclear fission occurs in fission reactors, a type of nuclear reactor, and in fission bombs, more commonly knows as atomic bombs.
Control rods in a nuclear reactor regulate the rate of nuclear fission by absorbing neutrons, which are needed to sustain the fission process. By adjusting the position of the control rods, operators can control the number of neutrons available to cause fission reactions, thus regulating the overall power output of the reactor.
Produce heat (energy) from nuclear fission.
That released by fission in a nuclear reactor
It is called nuclear chain fission reaction.