
Key words for GCSE Physics
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precaution |
If you take a precaution, it means you do something to stop something dangerous from happening.
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irradiation |
Exposing objects to nuclear radiation is called irradiation.
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chain |
A chain reaction is when neutrons, released during fisson, cause frisson in other nuclei which cause more neutrons to be released.
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reaction |
A chain reaction is when neutrons, released during fisson, cause frisson in other nuclei which cause more neutrons to be released.
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nuclear |
Nuclear fusion is when two nuclei are joined together.
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fission |
Nuclear fission is when an unstable nucleus is split.
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Becquerel |
A Becquerel is a unit of activity.
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activity |
The rate at which a source of unstable nuclei decays is known as its activity.
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count-rate |
The number of decays recorded per second is the count-rate.
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background |
Radiation in the environment is called background radiation.
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radiation |
Radiation in the environment is called background radiation.
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spontaneous |
If something is spontaneous, it means it happens without external stimulus.
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