Nuclear reactions- fission, fusion and chain reactions.

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1. Fusion occurs when-

  • small nuclei join to make large ones
  • pigs fly,it's not happened yet
  • one big nuclei splits to form two daughter nuclei
  • you mess around injecting things with odd stuff you probably shouldn't even be near
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2. In 1989 scientists said they made fusion happen at 50 degrees celsius. Why?

  • there isn't any proof they did, so their experiments aren't valid. They could've lied or pulled of something really amazing but we'll never know.
  • other
  • because the experiment took place at the bottom of the ocean
  • because the experiment took place in space

3. How are chain reactions controlled?

  • other
  • use a different material to absorb neutrons,slwoing the recation down as there are fewer neutrons to stimulate more fission recations
  • we don't know how to control a hypothetical chain reaction yet
  • nuclei are kept stable

4. If a chain reaction isn't controlled-

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

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

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


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