Radioactivty definitions 4.4

  • Created by: Olivia
  • Created on: 13-04-18 15:25
Radiation
The emission of energy as electromagnetic waves or subatomic particles which cause ionisation
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Half life
The time it takes for the substance to decay by half / the time taken for the number of decays to fall by half
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Short half life
The activity falls quickly as the nuclei are very unstable and rapidly decay
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Long half life
The activity falls slower because most of the nuclei dont decay for a long time
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Nuclear fission
A type of nuclear reaction that is used to release energy from large and unstable atoms by splitting them into smaller atoms
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Nuclear fusion
The process in which two small nuclei combine to form a larger one, releasing energy
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Other cards in this set

Card 2

Front

The time it takes for the substance to decay by half / the time taken for the number of decays to fall by half

Back

Half life

Card 3

Front

The activity falls quickly as the nuclei are very unstable and rapidly decay

Back

Preview of the back of card 3

Card 4

Front

The activity falls slower because most of the nuclei dont decay for a long time

Back

Preview of the back of card 4

Card 5

Front

A type of nuclear reaction that is used to release energy from large and unstable atoms by splitting them into smaller atoms

Back

Preview of the back of card 5
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