Across
- 2. Stars whose luminosity that varies periodically over time
- 4. a unit of measurement used to describe distances between celestial objects, equal to 3.26 light years
- 6. a very large star of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution.
- 10. a very large, very bright red giant star
- 11. a star system with two stars
- 12. ______-_____ (no dash)relation states that the more massive a star is, the more luminous it is
- 13. A very small star with low temperature, reddish in color.
Down
- 1. a diagonal area on an H-R diagram where most stars are located
- 3. The force of gravity at the surface of a planet, star, or other celestial body
- 5. a classification of stars according to the appearance of their spectra
- 7. An apparent shift in the position of an object when viewed from different locations
- 8. a graph that shows the relationship between a star's surface temperature (color) and absolute magnitude (brightness)
- 9. Law that states that he higher the temperature of a body the shorter the wavelength of it's maximum radiation. (hotter = shorter wavelength = bluer)