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What is the main difference between nuclear fission and nuclear fusion?

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Question: What is the main difference between nuclear fission and nuclear fusion?

Options:

  1. Fission combines nuclei, fusion splits them
  2. Fission splits nuclei, fusion combines them
  3. Fission occurs in stars, fusion occurs in reactors
  4. Fission is safer than fusion

Correct Answer: Fission splits nuclei, fusion combines them

Solution: 

Nuclear fission involves the splitting of a heavy nucleus into smaller nuclei, while nuclear fusion involves the combining of light nuclei to form a heavier nucleus.

What is the main difference between nuclear fission and nuclear fusion?

Practice Questions

Q1
What is the main difference between nuclear fission and nuclear fusion?
  1. Fission combines nuclei, fusion splits them
  2. Fission splits nuclei, fusion combines them
  3. Fission occurs in stars, fusion occurs in reactors
  4. Fission is safer than fusion

Questions & Step-by-Step Solutions

What is the main difference between nuclear fission and nuclear fusion?
Correct Answer: Nuclear fission involves splitting heavy nuclei, while nuclear fusion involves combining light nuclei.
  • Step 1: Understand that nuclear fission is when a large atom (nucleus) breaks apart into smaller atoms.
  • Step 2: Recognize that nuclear fusion is when small atoms (nuclei) come together to form a larger atom.
  • Step 3: Remember that fission releases energy by splitting, while fusion releases energy by combining.
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