Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
The Electromagnetic Spectrum
70 practice questions
Topics covered
Practice questions
31–33 of 33 · Easy
Question 31
1 mark · Easy
Answer and check →Which is a correct use of infrared radiation?
- A.Heating food in a grill
- B.Detecting gamma rays
- C.Transmitting X-rays for dental pictures
- D.Emitting blue light from an LED
Question 32
4 marks · Easy
Answer and see the solution →The electromagnetic spectrum is made up of different types of waves. Each type has different wavelengths and frequencies.
(a)[1 mark]Name the type of electromagnetic wave with the shortest wavelength.
(b)[1 mark]State one use for this type of wave.
(c)[1 mark]Which type of wave has a longer wavelength than visible light but a shorter wavelength than radio waves?
(d)[1 mark]Give a use for this type of wave.
Question 33
4 marks · Easy
Answer and see the solution →A scientist wants to use different types of electromagnetic waves for different purposes. She has a radio, a remote control, and a thermometer that can measure heat without touching the object.
(a)[1 mark]Which type of electromagnetic wave is used by the radio to carry signals?
(b)[1 mark]Which type of wave is used by the remote control?
(c)[1 mark]Which type of wave does the thermometer use to measure heat?
(d)[1 mark]Arrange these three waves in order of increasing frequency.