1. 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
- Trick question!
- 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
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Other questions in this quiz
2. What's a chain reaction?
- when in a fission reaction nuclei are formed, neutrons released in the reaction undergo fission
- when in a fission reaction the nucleus is formed, it splits and comes back together again
- when in a fission reaction nuclei are formed, the energy released stimulates other nuclei to undergo a fission reaction
- I can't see a link to physics
3. 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.
- because the experiment took place at the bottom of the ocean
- because the experiment took place in space
4. If a chain reaction isn't controlled-
- there'll be a nuclear explosion
- it prevents any of these other options
- living things will become ill
- there will be a risk of fire
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
- 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