Edexcel IGCSE Physics 3.10 Electromagnetic spectrum

Practise linking electromagnetic spectrum parts to observations, including infrared heating effects and the shared wave nature of light in free space.

Exam points

state infrared when a thermometer demonstration shows the largest temperature rise
link light to the wider EM spectrum including radio, visible, ultraviolet and gamma rays

[Maximum number: 2]

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

Figure for Question 3.10 Electromagnetic spectrum question 1 — Edexcel IGCSE Physics

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

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

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3.10 Electromagnetic spectrum question 1