Explore this spelling list: GCSE Physics: Radioactivity 2. This page and its activities are crafted to help you perfect your spelling. Try out the spelling games at the bottom of the page.
Key words for GCSE Physics
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gamma |
A gamma ray is a high energy electromagnetic wave emitted by the nucleus to get rid of excess energy.
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ray |
A gamma ray is a high energy electromagnetic wave emitted by the nucleus to get rid of excess energy.
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penetrate |
To penetrate something means to go through it.
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radioactive |
Radioactive decay is when a nucleus becomes more stable by emitting energy.
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decay |
Radioactive decay is when a nucleus becomes more stable by emitting energy.
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unstable |
If something is unstable it is more likely to collapse.
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ion |
An ion is formed when an atom or a group of atoms gains or loses and electron.
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frequency |
Frequency refers to how many waves pass a set point per second.
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ionising
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If a substance is ionising, it means it causes ionisation.
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ionisation
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The formation of ions is called ionisation.
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Geiger-Muller |
A Geiger-Muller tube is used to detect ionising radiation.
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tube |
A Geiger-Muller tube is used to detect ionising radiation.
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half-life |
The time taken for the count-rate to fall to half its original level is called the half-life.
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contamination |
Contamination is when unwanted radioactive atoms are present.
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