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5 Written questions

5 Matching questions

  1. Spectroscopic Binary
  2. Rigel
  3. Spectral type G
  4. Giants
  5. Sirius
  1. a Spectral type A (aqua) Temperature range: 7,500 - 10,000 K
  2. b Cool stars which are a little smaller and dimmer than the supergiants.
  3. c Yellow - Temperature range: 5,000 - 6,000 K.
  4. d Two stars that are so close that the only way we can detect the binary nature is through a spectral (red) shift.
  5. e Spectral type B (pale blue) Temperature range: 10,000 - 30,000 K

5 Multiple choice questions

  1. Comparing a star's luminosity to our Sun's luminosity. Lsun = 3.8 x 10 ^26 watts.
  2. What we see in the sky. Star Charts and planispheres use different size "dots" to represent.
  3. Red - Temperature range <3,500 K.
  4. The most important stellar property. Measured by an adaptation of Kepler's 3rd Law as derived by Sir Isaac Newton. Kepler's 3rd law you measure the period and average distance of the object's orbit. You need two objects. Over 50% of stars have a companion star.
  5. A star's life path as shown on a Hertzsprung-Russell Diagram.

5 True/False questions

  1. Pulsating VariablesOne of the two major classes of variables. There are five classes. One important example: Cepheid Variables.


  2. Closest StarThe distance light travels in one year = approximately 10 trillion kilometers.


  3. SupergiantsCool stars which are a little smaller and dimmer than the supergiants.


  4. Four stellar groupsSuper Giants, Giants, Main Sequence, White Dwarfs.


  5. Open ClusterConsist of two major groups: Open and Globular


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