Lesson 4.6.2.4

4.6.2.4 Uses and applications of electromagnetic waves Quiz: AQA Physics, Unit 6

20 questions

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Lesson 4.6.2.4, Uses and applications of electromagnetic waves: 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 6: Waves, written with Revision Ninja.

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The 20 questions

  1. Which electromagnetic wave is used in satellite communications?

    • X-rays
    • Ultraviolet
    • Microwaves
    • Infrared
  2. Which electromagnetic wave is used in electrical heaters?

    • Radio waves
    • Ultraviolet
    • Microwaves
    • Infrared
  3. Which part of the spectrum is used in fibre optic communications?

    • Microwaves
    • Gamma rays
    • Visible light
    • Radio waves
  4. Which electromagnetic wave is used in energy efficient lamps and sun tanning?

    • Gamma
    • Radio
    • Ultraviolet
    • Infrared
  5. Which electromagnetic waves are used for medical imaging?

    • Ultraviolet and radio waves
    • X-rays and gamma rays
    • Infrared and visible light
    • Radio waves and microwaves
  6. Which electromagnetic waves are used for television broadcasts?

    • Microwaves
    • Infrared
    • X-rays
    • Radio waves
  7. Why are radio waves suitable for television broadcasts?

    • Ionised in the atmosphere
    • Picked up by aerials
    • Reflected by ozone
    • Absorbed by water molecules
  8. How do microwaves cook food?

    • Scattered by air particles
    • Transmitted through glass
    • Reflected by metal surfaces
    • Absorbed by water molecules
  9. Why are X-rays suitable for medical imaging?

    • Absorbed by skin
    • Refracted by tissue
    • Reflected by bone
    • Absorbed by bone
  10. Why is infrared radiation used in electrical heaters?

    • Penetrates deep metal
    • Transfers thermal energy
    • Emits visible light
    • Reflects off walls
  11. How do ultraviolet waves produce light in energy efficient lamps?

    • Emitted by coating
    • Refracted by glass
    • Absorbed by filament
    • Scattered by gas
  12. Why is visible light used in fibre optic communications?

    • Amplifies the signal
    • Passes straight through
    • Guided along fibres
    • Travels infinitely fast
  13. Which electromagnetic wave is used to destroy cancer cells in hospitals?

    • Radio waves
    • Microwaves
    • Gamma rays
    • Infrared waves
  14. Why are microwaves used for satellite communications?

    • Reflected by clouds
    • Pass through atmosphere
    • Absorbed by air
    • Bend around Earth
  15. Which everyday item relies on microwaves to communicate with satellites?

    • A kettle
    • A wristwatch
    • A ceiling fan
    • A satellite dish
  16. Which electromagnetic wave is detected by an infrared camera?

    • Radio waves
    • Infrared
    • Microwaves
    • Ultraviolet
  17. Which medical application uses ionising electromagnetic radiation?

    • Laser surgery
    • Endoscopy
    • Thermal imaging
    • Radiotherapy
  18. Why are radio waves used for broadcasting to distant homes?

    • Long wavelengths
    • Ionising energy
    • Short range
    • High frequency
  19. Which application uses ultraviolet other than sun tanning?

    • Electrical heaters
    • Satellite communications
    • Fibre optic cables
    • Energy efficient lamps
  20. Which device uses infrared radiation to detect warm bodies in the dark?

    • Infrared camera
    • Endoscope
    • X-ray scanner
    • Periscope

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