GCSE Questions - Electromagnetic Spectrum
Q5. Different parts of the electromagnetic spectrum are useful for different methods of communication. The diagram below shows a transmitter emitting two electromagnetic waves, L and M.
(a)
(i) Wave L is used to send a signal to a satellite. Which part of the electromagnetic spectrum does wave L belong to? [1 mark]
Microwave 
(ii) What name is given to the process that occurs as wave L passes into the ionosphere? [1 mark]
Refraction
(b) Wave M is reflected by the ionosphere. On the diagram above: (See diagram)
(i) Draw the path of wave M until it reaches the receiver. [2 marks]
(ii) Draw a line to show the normal where wave M meets the ionosphere. Label the line N. [1 mark]
(c) Give two properties of all electromagnetic waves. [2 marks] Any two -
They can travel through a vacuum
All travel at the speed of light
They are transverse waves
They can be reflected
They can be refracted
They can be diffracted
They can be absorbed.
They transfer energy
They can be polarised
They can show interference
(Total 7 marks)
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