Solar System

Solar System, reflection and refraction

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1. Why can we see more stars with a telescope than is we use our naked eye

  • telescope collects more light than the naked eye so can see dimmer objects
  • it makes thing bigger
  • Telescopes collect less light which make it easier to see the planets
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2. Why do astronomers today find it useful to photograph distant galaxies

  • so they can zoom in on the photo
  • more light collected, distant galaxies produce little light
  • to look at later went they want to

3. What is a virtual image

  • there is more than one
  • An image that appears to have only to have come from where the dotted line meets
  • it doesn't exist

4. What is measured in hertz (Hz)

  • Frequency
  • Velocity
  • Amplitude
  • Speed

5. What is meant by a wave being 1 HZ

  • 1 wave an hour
  • 1 wave a millisecond
  • 1 wave a second
  • 1 wave a minute
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