Nuclear reactions- fission, fusion and chain reactions.

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1. Why isn't fusion a casual source of energy?

  • To produce the correct heat and pressure needed for fusion on Earth, it uses more energy than it makes
  • It's only a hypothetical idea
  • Because it doesn't produce any
  • It can currently occur in space only and can't be taken to Earth
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2. Fusion occurs when-

  • you mess around injecting things with odd stuff you probably shouldn't even be near
  • pigs fly,it's not happened yet
  • small nuclei join to make large ones
  • one big nuclei splits to form two daughter nuclei

3. If a chain reaction isn't controlled-

  • there'll be a nuclear explosion
  • living things will become ill
  • there will be a risk of fire
  • it prevents any of these other options

4. true or false- all nuclear reactions can be sources of energy

  • From a certain point of view
  • true
  • false
  • Idk

5. In a fission reaction-

  • a big, unstable nucleus can split into smaller ones when ,for example, absorbing a neutron
  • small nuclei combine to make big ones
  • an atom splits into two smaller ones
  • three nuclei split then combine into one
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