Gamma rays
2 marks · EasyGive two reasons why gamma rays are considered dangerous.
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They can penetrate deeply into the body and cause mutations or cancer.
Also accept: highly penetrating; cause damage to living cells; can pass through the body and cause mutations
Common mistakes: just they are hot; only cause burns
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Marking points
B1 · 1 mark · States gamma rays are highly penetrating
B2 · 1 mark · States gamma rays can cause mutations/damage/cancer
Worked solution
Gamma rays are dangerous because they are highly penetrating and can pass deep into tissues. They can cause mutations in cells, which can lead to cancer.