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5 Cards in this Set
- Front
- Back
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what is nuclear fission? |
a type of nuclear reaction |
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what are the stages of nuclear fission? |
1. a neutron collides with a uranium nucleus. a uranium nucleus is large and unstable the uranium nucleus splits into 2. two similar sized smaller nuclei 3. more neutrons are released 4. these neutrons can then collide with more uranium nuclei process is repeated |
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advantages of nuclear fission? |
no co2 produced high power output small amount of fuel needed compared to coal or gas |
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disadvantages of nuclear fission |
hazardous radioactive waste is produced building power station expensive decommissioning is expensive |
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where and what do cool rods do? |
lowered into the core absorb neutrons control rate of chain reaction (speed reaction up or down |
