The continuous release of nuclear energy caused when on fission reaction triggers more nuclear reactions is a _

These are called as nuclear chain reactions.

Explanation: Nuclear Fission reactions are the reactions in which one heavier nuclei produces two lighter daughter nuclei.

Nuclear chain reactions are defined as the chemical reactions when one neutron released in a fission reaction produces another fission reactions in other nucleus. The other nucleus again releases neutrons and a chain of reactions is formed.

These reactions are generally uncontrollable.

Hence, The continuous release of nuclear energy caused when on fission reaction triggers more nuclear reactions is a nuclear chain reaction.

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