Simple Description

Rods that are used in a nuclear power station to control how much energy is generated.

Further Detail

If the rods are moved down (into the reaction chamber) then neutrons are absorbed, reducing the power output of the generator. If the rods are moved up out of the reaction chamber then the reaction speeds up.

Related Words:

• Nuclear power station
• Nuclear fission
• Fission
• Plutonium
• Uranium

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