Question detail
What happens to the nuclei during nuclear fusion?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Nuclear fission and fusion
Question
- A. They split into smaller parts.
- B. They combine to form a heavier nucleus.
- C. They remain unchanged.
- D. They emit gamma radiation.
Answer
The correct answer is B: They combine to form a heavier nucleus..
Explanation
The correct answer is B: They combine to form a heavier nucleus.. This supports the learning objective "(Physics only) Explain why high pressure or high density helps nuclei collide in fusion conditions." in Nuclear fusion (physics only) because it uses the correct atomic and nuclear radiation relationship for Nuclear fission and fusion. The other options are less suitable because they do not match the required Nuclear fusion (physics only) idea: They split into smaller parts.; They remain unchanged.; They emit gamma radiation..
Common mistake
Misunderstanding Fusion Conditions
Students often think that high temperature alone is sufficient for nuclear fusion without considering the role of high pressure or density.
Emphasize that both high temperature and high pressure/density are crucial for overcoming electrostatic repulsion and facilitating collisions between nuclei.
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