In a nuclear reactor, "chain reaction" refers primarily to
A) an out-of-control explosion.
B) the process of heating water to create steam to generate electric power.
C) the enrichment of uranium to make fuel for the reactor.
D) the process by which the fission of one nucleus causes other nuclei to undergo fission.

Question

Quizplus · Accepted Answer

The term "chain reaction" in a nuclear reactor refers to the process by which the fission of one nucleus causes other nuclei to undergo fission, leading to a sustained release of energy. This is what allows the reactor to generate heat, which is then used to create steam and generate electric power. An out-of-control explosion would be a catastrophic event in a nuclear reactor and is not what is meant by "chain reaction." Enrichment of uranium is necessary to create fuel for the reactor, but it is not what is meant by "chain reaction."

In a Nuclear Reactor, "Chain Reaction" Refers Primarily to