Ch. 10 Review

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Across
  1. 1. speed The speed of a wave
  2. 4. How fast a wave is going up and down
  3. 5. parallex A way to find a near star's distance
  4. 8. A ball of fire
  5. 9. brightness How bright a star appears
  6. 10. The length of a wave
  7. 12. How bright a star is
Down
  1. 2. spectrum Has different types of waves
  2. 3. The closest star to Earth
  3. 6. The top of a wave
  4. 7. The bottom of a wave
  5. 11. way The galaxy we live in
  6. 12. year The distance light travels in a year