Gamma rays
3 marks · EasyGamma rays are used in hospitals.
State one use of gamma rays in a hospital.
Explain why it is important to protect staff from gamma rays.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) Treating cancer OR sterilising equipment
(b) Gamma rays can harm living cells, causing mutations or cancer.
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · States any valid hospital use (treating cancer, sterilising instruments)
M1 (b) · 1 mark · States gamma rays can damage living cells / cause mutations OR cancer
A1 (b) · 1 mark · Explains that this can result in harm to staff (cancer risk etc.)
Worked solution
a) Gamma rays are used to treat cancer or sterilise instruments. b) It is important to protect staff because gamma rays are highly penetrating and can damage living cells, which could cause mutations and lead to cancer.