ES 8.1.1 & 8.1.2

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Across
  1. 2. When light passes through an electrograph and there are absent colors, these black lines are called .....
  2. 4. _________flames are hotter than yellow flames.
  3. 6. The distance that light travels in a vacuum in one year (approximately 9.46 x 10^12)
  4. 7. Much of the information about stars can be found by studying the _____ they emit.
  5. 8. The closest star to Earth other than the sun.
  6. 12. A star at the end of it's life cycle that expands and cools as it runs out of hydrogen.
  7. 13. These flames are the coolest.
  8. 16. The diagonal patter of stars on the H-R diagram.
  9. 17. An instrument that splits starlight into all its colors.
  10. 19. The shift in an objects direction when viewed from two geographically distant locations.
  11. 20. This tool which stands for Hertzsprung-Russell, plots the relationship between a star's spectrum and it's absolute magnitude.
  12. 22. What the H-R diagram shows on it's y-axis.
  13. 24. When an object gives off all the colors necessary to produce white light, this range of color is called...
  14. 28. How bright an object appears to an observer on Earth.
  15. 29. Enormous balls of hot gas.
  16. 30. Large clouds of interstellar material.
  17. 31. The leftover materials in the core of a supernova.
  18. 32. The array of colors produced when light passes through a prism.
Down
  1. 1. The faintest stars.
  2. 3. If light splits with an electrograph, only a few colors appear. These colors are known as this.
  3. 5. What the H-R diagram shows on it's x-axis.
  4. 9. The material that where stars are born is known as this.
  5. 10. A stars color not only indicates its temperature but also its ________ ______.
  6. 11. A small, hot, faint star at the end of its life.
  7. 14. When a blue star collapses under its own weight and explodes in a brilliant flash of light it is called this.
  8. 15. A massive celestial object with gravity so strong that not even light can escape.
  9. 18. The brightest stars.
  10. 21. The brightness of a star measured by an observer that is 32.6 light years away.
  11. 23. Also called Polaris, all stars seem to rotate around this star because it is directly above Earth's North Pole.
  12. 25. Stars are fueled by this.
  13. 26. In the 1880s, scientists began classifying stars according to this.
  14. 27. A spinning neutron star that give off pulses of radiation at regular intervals.