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5 Written questions

5 Matching questions

  1. Why was adaptive optics developed?
  2. The time period between two successive passages of a planet through the position of opposition is
  3. One difference between violet light and red light is that
  4. In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to longitude?
  5. In the 1860s, James Clerk Maxwell carried out important investigations on the nature of light when he
  1. a violet light has a shorter wavelength than red light.
  2. b Right ascension
  3. c to compensate for image distortion caused by the Earth's atmosphere.
  4. d its synodic period.
  5. e proved mathematically that light could b described by oscillating electric and magnetic fields.

5 Multiple choice questions

  1. shows absorption features where light has been absorbed by the atoms of the cool gas.
  2. distance that light travels in one year.
  3. zero.
  4. parabolic shape.
  5. The air molecules scatter blue light better than red light, so more blue light reaches our eyes.

5 True/False questions

  1. Why were Newton's three laws so important to astronomy?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.


  2. In the geocentric model of the solar system developed by Ptolemy, the planets movein circular epicycles while the centers of the epicycles move in circular orbits around the Earth.


  3. The ecliptic can be defined as thepath traced out by the Sun in our sky over one year against the background stars.


  4. What evidence do we have that the Sun contains the element iron?at all wavelengths, with a peak at one particular wavelength (color).


  5. The Copernican system for planetary motion isare 88 in number and cover the entire sky.