Question

1. uranium - 235 has to be processed into fuel pellets before being placed into fuel rods.

a. false
b. true

1. ____________ can grow quickly and cause explosions.

a. controlled fission reactions
b. uncontrolled fission reactions
c. uncontrolled fusion reactions
d. controlled fusion reactions

Explanation:

• For question 7: Uranium - 235 is processed into fuel pellets (usually in the form of uranium dioxide) which are then loaded into fuel rods. This is a standard part of nuclear fuel preparation.
• For question 8: Uncontrolled fission reactions (like in a nuclear bomb) release a large amount of energy very quickly as the chain reaction is not regulated. Controlled fission reactions (in nuclear power plants) are regulated to produce energy steadily. Fusion reactions (controlled or uncontrolled) are different from fission and currently, uncontrolled fusion reactions (like in the sun) occur naturally but are not harnessed for energy production in the same way as fission, and controlled fusion is still in the experimental stage for energy production.

Answer:

1. B. True
2. B. Uncontrolled fission reactions