Half Life and Nuclear Waste

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Unstable Nuclei emit radiation with each nucleus having an...
equal chance of decaying next
1 of 9
Activity - The number of...
alpha, beta or gamma particles detected per unit time
2 of 9
The half-life of a radioactive isotope is the average time it takes for the...
number of nuclei of the isotope in a sample to halve
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Or the time it takes for the count rate from a sample containing the isotope to...
fall to half its initial level
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Waste from nuclear power stations may remain...
radioactive for thousands of years
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The waste may contaminate or...
irritate the environment
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Low and intermediate level nuclear waste (e.g. Contaminated clothes or radioactive sources used in medicine) can be...
encased in concrete and stored until it reaches safe radiation levels
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High level waste (e.g. Nuclear fuel) is stored...
underwater for 20yrs
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It is then placed in concrete casks into...
underground storage
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Other cards in this set

Card 2

Front

alpha, beta or gamma particles detected per unit time

Back

Activity - The number of...

Card 3

Front

number of nuclei of the isotope in a sample to halve

Back

Preview of the back of card 3

Card 4

Front

fall to half its initial level

Back

Preview of the back of card 4

Card 5

Front

radioactive for thousands of years

Back

Preview of the back of card 5
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