Question 20
FThe Figure shows a welder at work.
Figure
The welding arc emits ultraviolet radiation and infrared radiation.
a.[2]
Describe two harmful effects of excessive exposure to ultraviolet radiation.
b.[1]
State the harmful effect of excessive exposure to infrared radiation.
c.[2]
Explain why the welder wears a dark visor over the eyes.
d.[2]
A student says:
'Ultraviolet radiation is potentially more dangerous than infrared radiation.'
State whether the student is correct.
Give a reason for your answer.
5.4 Uses and dangers of EM radiation Questions
104 exam-style questions on Edexcel GCSE Physics 5.4 Uses and dangers of EM radiation, covering 5.4.1 Dangers of electromagnetic radiation, 5.4.2 Uses of electromagnetic radiation, 5.4.3 Radio waves and oscillations in circuits, and 5.4.4 Changes in atoms and nuclei generating radiation. Each one has a worked solution and a mark scheme showing where the marks go.