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5 Written Questions

5 Matching Questions

  1. Solar Luminosity
  2. Magnitude System
  3. Giants
  4. Spectral type K
  5. Variable Stars
  1. a Originated by Hipparchus. A scale to show how bright the stars appear to our eyes (or binoculars and telescopes)
  2. b Comparing a star's luminosity to our Sun's luminosity. Lsun = 3.8 x 10 ^26 watts.
  3. c Cool stars which are a little smaller and dimmer than the supergiants.
  4. d Stars that appear to change in brightness.
  5. e Orange - Temperature range: 3,500 - 5,000 K.

5 Multiple Choice Questions

  1. The distance to an object with a parallax angle of 1 arcsecond; unit is pc. One pc = 3.26 light years (ly) = 3.09 x 10^13 km.
  2. Spectral type B (pale blue) Temperature range: 10,000 - 30,000 K
  3. Gravitationally-bound grouping of very old stars. <10,000 to one million stars> Old, many, many, stars, organized.
  4. Cool stars which are very large and very bright.
  5. The Sun

5 True/False Questions

  1. Cataclysmic VariablesOne of the major classes of variables.


  2. Absolute MagnitudeWhat we see in the sky. Star Charts and planispheres use different size "dots" to represent.


  3. Spectral type BPale Blue -Temperature range: 10,000 - 30,000 K


  4. Star's temperatureMeasured at a star's photosphere. The photosphere temperature dictates its color. Hotter stars are whiter. Cooler stars are redder. Our Sun is a yellow star.


  5. Eclipsing BinaryPair of stars that we can see orbiting each other.


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