Visible light and the solar system

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1. How does a reflecting telescope work?

  • It has an objective lens in which the light is reflected.
  • Using an objective lens and an eyepiece lens.
  • The curved primary mirror focuses light rays from a distant object to an image in the same way as the objective lens in a refracting telescope. This image is then magnified by the eyepiece lens, also just like a refracting telescope.
  • By making light travel through more than one material so that it is refracted.
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2. The amplitude of a wave is...

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

3. Why does refraction occur?

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

4. Waves are reflected at...

  • ...one specific angle.
  • ...boundaries between different materials.
  • ...any point.
  • ...mirrors.

5. How did Galileo prove that not everything orbited the earth?

  • He showed that everything did orbit the earth.
  • He was told by Copernicous
  • He observed that 4 of Jupiter's moon's orbited Jupiter.
  • He observed that 4 of Saturn's moon's orbited Saturn.

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