1. Why isn't fusion a casual source of energy?
- It can currently occur in space only and can't be taken to Earth
- It's only a hypothetical idea
- 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
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2. Why is fusion difficult?
- Nuclei have to be really close before it occurs, and as unless really high temperatures and pressures are reached to overcome this, the positive charges repel one another
- Because scientists haven't yet figured out how it works
- Nuclei may blow up if they get to the correct heat and pressure for fusion,so there is a low chance of them being able to fuse
- Trick question!
3. Fusion occurs when-
- you mess around injecting things with odd stuff you probably shouldn't even be near
- small nuclei join to make large ones
- one big nuclei splits to form two daughter nuclei
- pigs fly,it's not happened yet
4. How are chain reactions controlled?
- use a different material to absorb neutrons,slwoing the recation down as there are fewer neutrons to stimulate more fission recations
- nuclei are kept stable
- we don't know how to control a hypothetical chain reaction yet
5. true or false- all nuclear reactions can be sources of energy
- From a certain point of view