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15
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What is a radioactive tracer?
A substance used in medicine or industry to follow the path of a substance
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15
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What is radioactive contamination?
When radioactive material is deposited on or in an object
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15
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How is nuclear radiation used in smoke detectors?
alpha particles ionise air; smoke blocks ionisation, changing current
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seesaw
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shark
Other team loses 20 points!
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gift
Win 25 points!
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banana
Go to last place!
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15
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What is meant by "ionising radiation"?
Radiation that can remove electrons from atoms
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15
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How can you reduce exposure to radiation in a lab?
Use shielding, limit time, increase distance
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15
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State one use of beta radiation in industry.
Thickness monitoring in paper/plastic
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15
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Why do we use isotopes with short half-lives in medicine?
So they decay quickly and donât remain radioactive in the body
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15
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Which radiation is stopped by paper?
Alpha
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15
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What type of radiation is used to sterilise surgical equipment?
Gamma
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15
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Which type of radiation is a helium nucleus?
Alpha
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15
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Is radioactivity a chemical or nuclear change?
Nuclear
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15
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How is a beta particle formed?
When a neutron decays into a proton + electron (beta)
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lifesaver
Give 25 points!
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fairy
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25
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fairy
Take points!
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25
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baam
Lose 25 points!
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thief
Give points!
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25
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shark
Other team loses 20 points!
Okay!
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shark
Other team loses 25 points!
Okay!
×
banana
Go to last place!
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banana
Go to last place!
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seesaw
Swap points!
Okay!
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fairy
Take points!
5
10
15
20
25
×
banana
Go to last place!
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