Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
The Electromagnetic Spectrum
70 practice questions
Topics covered
Practice questions
21–30 of 70
Question 21
2 marks · Easy
Answer and see the solution →Microwaves are part of the electromagnetic spectrum.
(a)[1 mark]State one use of microwaves.
(b)[1 mark]State whether microwaves have a higher or lower frequency than infrared waves.
Question 22
2 marks · Easy
Answer and see the solution →The electromagnetic spectrum is a continuous spectrum. Answer the following questions.
(a)[1 mark]State what is meant by a 'continuous spectrum'.
(b)[1 mark]Is there a clear boundary between types of electromagnetic waves? Answer yes or no.
Question 23
1 mark · Easy
Answer and see the solution →What happens to the wavelength of electromagnetic waves as the frequency increases?
Question 24
1 mark · Easy
Answer and check →Which statement about all electromagnetic waves is correct?
- A.They all travel at different speeds in a vacuum.
- B.They are all longitudinal waves.
- C.They all transfer energy.
- D.They cannot be reflected.
Question 25
1 mark · Normal
Answer and check →Which of the following electromagnetic waves has the longest wavelength?
- A.Infrared
- B.X-rays
- C.Radio waves
- D.Ultraviolet
Question 26
2 marks · Normal
Answer and see the solution →State two properties that are shared by all waves in the electromagnetic spectrum.
Question 27
3 marks · Normal
Answer and see the solution →Fill in the missing boxes in the table to correctly order the following electromagnetic waves by increasing frequency. Start with the lowest frequency.
Order (1 = lowest frequency) Wave type 1 Radio waves 2 ? 3 Visible light 4 ? 5 Gamma rays Question 28
3 marks · Normal
Answer and see the solution →The wavelength of a red light wave is m. Calculate the frequency of this light.
(The speed of light in a vacuum is m/s.)
Question 29
2 marks · Normal
Answer and see the solution →Explain why gamma rays and X-rays are placed at the same end of the electromagnetic spectrum.
Question 30
4 marks · Normal
Answer and see the solution →The diagram below represents the electromagnetic spectrum, but some wave types are missing.
Some wave types have been omitted from the spectrum. Wave type Relative position (increasing frequency) Radio waves 1 - 2 Visible light 3 - 4 Gamma rays 5 (a)[1 mark]Name the wave type that should be in position 2.
(b)[1 mark]Name the wave type that should be in position 4.
(c)[1 mark]State whether the wavelength of the wave in position 2 is longer or shorter than that of visible light.
(d)[1 mark]State one use of the wave type in position 4.