Multiple choice

A nuclear power plant has a moderator which

  1. absorbs neutrons and thereby controls the fission reactions

  2. slow downs the neutrons produced from the fission reactions so that they can be absorbed by more fuel

  3. carries the heat produced from the fission reactions to an external turbine

  4. protects the workers and the environment from radiation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is to slow down the neutrons produced in fission, because slow neutrons are much more likely to be captured by a U-235 nucleus, thus continuing the chain reaction.

Keep practicing — related questions