Physics Topic 1

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1. What do ALL waves have? (Visable light, ultrasounds, infrared)

  • Glass, Aluminium, Metal, Tin
  • Wavelength, Frequency, Amplitude, Speed
  • Frequency, Light, Sound, Speed
  • Salt, Stones, Sand, Animals
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2. What do all lenses do?

  • They change the direction of light rays by refraction.
  • They make people look more fashionable.
  • They change the direction of light rays by reflection.

3. What is a Transverse wave?

  • Its a type of wave that causes erosion.
  • The waves are at at a 90 degree angle to the direction of the wave. Examples; light and electromagnetic, s waves and water.
  • The waves are 180 degree angle. Example are sound.

4. What formula do you use when working out speed, frequency and wavelength?

  • Speed= Frequency times Wavelength.
  • Frequency= Speed divide wavelength.
  • Wavelength= Speed takeaway frequency.

5. How many lenses does a refracting lense use?

  • 2
  • 1
  • 4
  • 3


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