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Question 18M.3.HL.TZ1.c

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.HL.TZ1.c
Level HL Paper 3 Time zone TZ1
Command term Suggest Question number c Adapted from N/A
c.
[Maximum mark: 1]
18M.3.HL.TZ1.c

Suggest one reason why doctors use ultrasound rather than X-rays to monitor the development of a fetus. 

[1]

Markscheme

X-rays are an ionizing radiation and so might cause harm to the developing fetus.

OR

there are no known harmful effects when using ultrasound

 

Ignore “moving images by ultrasound”.

[1 mark]

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