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5 Written questions

5 Matching questions

  1. Cataclysmic Variables
  2. Eclipsing Binary
  3. Spectral type F
  4. Parallax
  5. Closest Star
  1. a The Sun
  2. b Pale Yellow - Temperature range: 6,000-7,500
  3. c One of the major classes of variables.
  4. d The apparent shift of an object relative to some distant background as the observer's point of view changes. Allows you to determine close stellar distances. Only works with fairly close stars
  5. e Pair of stars that orbit in the plane of our line of sight causing it to "blink". Often listed as EBS. (Algol in the Iliad by Homer)

5 Multiple choice questions

  1. The amount of light reahing us (per unit area); measured in flux.
  2. 1/2 the star's shift back and forth, in degrees.
  3. Pale Blue -Temperature range: 10,000 - 30,000 K
  4. Spectral type A (aqua) Temperature range: 7,500 - 10,000 K
  5. Gravitationally-bound grouping of very old stars. <10,000 to one million stars> Old, many, many, stars, organized.

5 True/False questions

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


  2. Binary StarsStars that appear to change in brightness.


  3. Issues with Measuring ParallaxOne of the two major classes of variables. There are five classes. One important example: Cepheid Variables.


  4. Spectral type KOrange - Temperature range: 3,500 - 5,000 K.


  5. ParsecThe 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.