1. What's a chain reaction?
- I can't see a link to physics
- when in a fission reaction nuclei are formed, neutrons released in the reaction undergo fission
- when in a fission reaction nuclei are formed, the energy released stimulates other nuclei to undergo a fission reaction
- when in a fission reaction the nucleus is formed, it splits and comes back together again
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2. Fusion occurs when-
- pigs fly,it's not happened yet
- one big nuclei splits to form two daughter nuclei
- small nuclei join to make large ones
- you mess around injecting things with odd stuff you probably shouldn't even be near
3. How are chain reactions controlled?
- nuclei are kept stable
- 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
4. What are nuclei resulting from a fission reaction called?
- daughter nuclei
- son nuclei
- fusion nuclei
- resultant nuclei
5. 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
- Because it doesn't produce any
- It can currently occur in space only and can't be taken to Earth
- It's only a hypothetical idea