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Edexcel IGCSE Physics C the Electromagnetic Spectrum Questions

Practise electromagnetic spectrum questions by identifying regions, matching waves to uses and explaining hazard mechanisms from evidence.

Syllabus
First assessment 2019
Course
Physics 4PH1

Exam points

  • Identify spectrum regions from labelled diagrams, adjacent positions or frequency comparisons.
  • Link EM uses to radiation type, such as microwaves for cooking or gamma rays for sterilising.
  • Explain hazards using the radiation and effect, such as UV cell damage or microwave heating.

Covered syllabus points

3.10 Electromagnetic spectrum3.11 EM spectrum order3.12 Uses of EM radiation3.13 Risks of EM radiation

Question 1

[Maximum number: 5]

The photograph shows infrared heating lamps being used to harden fresh paint on a car.

Figure for Question 1 — Edexcel IGCSE Physics

Question (a)

(a)

Give a harmful effect of infrared waves.

[ 1 ]

Question (b)

(b)

The heating lamps produce visible light waves in addition to infrared waves.

[ 4 ]

Question (i)

(i)

Give two similar properties of visible light waves and infrared waves.

1

2

[ 2 ]

Question (ii)

(ii)

Give two differences between the properties of visible light waves and infrared waves.

1

2

[ 2 ]

Question 2

[Maximum number: 1]

This question is about waves.

Microwaves are part of the electromagnetic spectrum.

Name the part of the electromagnetic spectrum that has a lower frequency than microwaves.

Question 3

[Maximum number: 4]

This question is about waves.

Question (a)

(a)

Draw a straight line linking each electromagnetic wave to its correct hazard.

Electromagnetic wave
Hazard

Figure for Question (a) — Edexcel IGCSE Physics
[ 2 ]

Question (b)

(b)

Which of these is a use for x-rays?

A

checking for broken bones

B

cooking food

C

detecting forged banknotes

D

smoke detectors

[ 1 ]

Question (c)

(c)

Which of these is a use for infrared waves?

A

checking for broken bones

B

cooking food

C

detecting forged banknotes

D

sterilising medical instruments

[ 1 ]
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