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5 Written questions

5 Matching questions

  1. According to Kirchoff's law, the continuous spectrum of light from a hot star, after passing through a cool gas cloud,
  2. The chemical makeup of a star's surface is usually inferred by
  3. In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to longitude?
  4. In the 1860s, James Clerk Maxwell carried out important investigations on the nature of light when he
  5. In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to latitude?
  1. a Right ascension
  2. b shows absorption features where light has been absorbed by the atoms of the cool gas.
  3. c declination
  4. d proved mathematically that light could b described by oscillating electric and magnetic fields.
  5. e spectroscopy of the light emitted by the star.

5 Multiple choice questions

  1. parabolic shape.
  2. testing of prediction from a scientific theory or theoretical model.
  3. in circular epicycles while the centers of the epicycles move in circular orbits around the Earth.
  4. opposition.
  5. rotation of Earth on it axis.

5 True/False questions

  1. The time period between two successive passages of a planet through the position of opposition isits synodic period.

          

  2. When a solid body (or a dense gas such as a star) cools from a temperature of several thousand degrees, the color of the wavelength of maximum emission of radiation willmove steadily toward the red end of the spectrum.

          

  3. Refraction is thedistance that light travels in one year.

          

  4. A planet at inferior conjunction is alwayscloser to the Earth than the Sun is.

          

  5. The ecliptic can be defined as thedistance that light travels in one year.