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15
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Explain why gamma rays are used in cancer treatment.
They Penetrate tissues and kill cancer cells without damaging surrounding organs as much
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15
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What is the mass number of a gamma ray?
0
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15
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What does "half-life" mean?
Time taken for half the radioactive nuclei to decay
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15
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Name a natural source of background radiation.
Radon gas / cosmic rays / rocks
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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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heart
Other team wins 20 points!
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rocket
Go to first place!
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shark
Other team loses 20 points!
Okay!
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banana
Go to last place!
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15
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What changes occur in the nucleus during beta decay?
A neutron turns into a proton and emits a beta particle
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15
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Which radiation travels at the speed of light?
Gamma
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15
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What is the charge of a beta particle?
Negative
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seesaw
Swap points!
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magnet
Take 10 points!
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gift
Win 20 points!
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lifesaver
Give 25 points!
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15
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Why do scientists wear lead aprons when working with radiation?
Lead absorbs radiation, reducing exposure
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15
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Is radioactivity a chemical or nuclear change?
Nuclear
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boom
Lose 50 points!
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seesaw
Swap points!
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shark
Other team loses 20 points!
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baam
Lose 25 points!
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15
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Which radiation changes a neutron into a proton?
Beta
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15
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Why does a radioactive isotope become stable over time?
Its unstable nuclei decay to form stable nuclei
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15
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What is the unit of radioactive activity?
Becquerel (Bq)
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