Question

In order to adequately control the chain reaction in a nuclear power plant, it is necessary to have within the fissionable material a non-fissionable material that _____ neutrons.

a. contributes

b. absorbs

c. reflects

d. emits

e. slows down

Answer 1

B

Step-by-step explanation:

In a chain reaction of radioactive decay, more and more neutrons are produced that bombard more nuclei causing them to split (decay). This how a nuclear core releases more and more energy. The purity of the radioactive core determines the chain reaction and rate of energy released. A few impurities (nonfissionable material) are introduced to absorb excess neutrons (and regulate their numbers) to prevent overheating of the core.