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RADIOACTIVITY

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edwinesosa's version from 2015-06-17 19:44

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Question Answer
what is beta absorbed completely by and range in air3mm of aluminium; about a metre
what is gamma absorbed by completely and range in airseveral cm of lead; unlimited
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What is radiation intensitythe radiation energy per second passing normally through unit area
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what is a half lifethe time taken for a radioactive isotope to decrease to half it's initial mass
What is activity and (unit)the number of nuclei that disintegrate in a radioactive isotope in a second (becquerel Bq)
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Question Answer
What is the decay constantthe probability that an individual nucleus decaying per second
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explain carbon dating datingThe Activity of carbon 14 nuclei in dead samples of a living organism are measured to determine it's age
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Question Answer
examples of radioactive tracersmonitoring the uptake of iodine in the thyroid gland + detecting underground pipe leaks
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