Nuclear fission and fusion Quiz
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5 questions, one answer each
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1. Which part of a fission reactor absorbs neutrons?
- A. Moderator
- B. Coolant
- C. Control rods
- D. Turbine
2. What happens in nuclear fusion?
- A. A large nucleus splits
- B. Small nuclei join to form a larger nucleus
- C. A nucleus gives out gamma rays only
- D. Electrons are removed from atoms
3. Why is nuclear waste from fission a problem?
- A. It is always a solid
- B. It cools down quickly
- C. It has no radiation
- D. Some of it stays radioactive for thousands of years
4. What is the energy source of the Sun?
- A. Nuclear fission of uranium
- B. Burning of hydrogen gas
- C. Nuclear fusion of hydrogen
- D. Radioactive decay of helium
5. What is the job of the moderator in a fission reactor?
- A. To slow neutrons down
- B. To absorb neutrons
- C. To block gamma rays
- D. To drive the turbine