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5 Written questions

5 Matching questions

  1. If a modern astronomer describes a faint star as being in the constellation Cygnus, the Swan, you know that the star is
  2. In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to latitude?
  3. Are the constellations seasonal?
  4. The main reason for building large optical telescopes on the Earth's surface is to
  5. One light-year is the
  1. a collect more light from faint objects.
  2. b distance that light travels in one year.
  3. c Yes, On a summer night many of the constellation you can see are different from the constellations you can see on a winter night. But there are some constellations you can see all year long.
  4. d declination
  5. e somewhere within a particular region of sky having definite boundaries.

5 Multiple choice questions

  1. zero.
  2. to obtain much better angular resolution or sharpness in the images.
  3. path traced out by the Sun in our sky over one year against the background stars.
  4. celestial equator and the star, measured along a great circle passing through both celestial poles.
  5. violet light has a shorter wavelength than red light.

5 True/False questions

  1. Kepler's first law states that a planet moves around the Sun in a(n)opposition.


  2. In the 1860s, James Clerk Maxwell carried out important investigations on the nature of light when heelliptical orbit, with the Sun at one focus.


  3. The charged-coupled device, now used extensively for astronomical imaging, works on what principle?Light generates electrical charge on a computer-readable multielement array of detectors.


  4. According to modern atomic theory, light emitted by atoms originates fromthe direction of an object's motion changes.


  5. Why is the sky blue?distance that light travels in one year.


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