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15 Cards in this Set
- Front
- Back
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What is nuclear fission? |
The splitting of an atomic nucleus |
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What are the two fissionable isotopes commonly used in nuclear reactors? |
Uranium-235 and plutonium-239 |
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What energy does nuclear fission released? |
Heat energy |
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What happens when a neutron is fired into the nucleus of the atom? |
The nucleus splits this releases energy |
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What is emitted from the nucleus? |
Two or three neutrons |
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What is a chain reaction? |
A reaction in which one reaction causes further reactions, which in turn cause further reactions etc. |
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How is nuclear fission a chain reaction? |
because neutrons released from fission reactions go on to produce further fission reactions. |
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How is this chain reaction controlled? |
By nuclear reactor rods that absorb fission neutrons to ensure that on average only one neutron per fission reaction goes on to produce further fission reactions |
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What is nuclear fusion? |
The process in which two nuclei join together to make a large nucleus |
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Where is fusion used to release energy? |
In starts |
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