Visible light and the solar system

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1. The amplitude of a wave is...

  • The number of waves passing a point each second.
  • How fast a wave travels.
  • The maximum distance of a point on the wave from its rest position.
  • The distance from a point on one wave to the same point on the next wave
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2. Why does refraction occur?

  • Waves are reflected at boundaries between different materials.
  • Waves are refracted at boundaries between different materials.
  • Light travels at different speeds in different materials.
  • A lens makes it happen.

3. What is the geocentric model?

  • The idea that planets moved in orbits
  • The idea that the earth is the center of everything.
  • The idea that the sun is the center of everything.
  • A model by Nicholaus Copernicus

4. How do you find a focal length?

  • By focusing a distant object on a piece of paper through the lens. The focal length is the distance between the centre of the lens and the image.
  • By measuring the distance between the focal point and the image.
  • By using a mirror.
  • By measuring the angle of refraction.

5. What type of waves are electromagnetic waves?

  • Seismic.
  • Longitudinal.
  • Tranverse.
  • Sound.

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