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GCSE Questions - Electromagnetic Spectrum

Q12. Visible light is part of the electromagnetic spectrum.

(a) Name a wave in the electromagnetic spectrum that has a longer wavelength than red light.

One of the following:

Radio / infra-red / microwave

[1 mark]

(b) Name a wave in the electromagnetic spectrum that has a higher frequency than violet light.

One of the following:

Ultra-violet / X-rays / gamma-rays

[1 mark]

(c) State two uses of gamma-rays.

Any two from:

Radiotherapy / treating cancer tumours/ killing cancer cells

Irradiating food / sterilisation of instruments / killing bacteria or (harmful) microorganisms

As a tracer / medical imaging

Scanning metals / non-destructive testing (NDT)

[2 marks]

(Total 4 marks)