DCP #1 Review

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Across
  1. 1. system of stars and nebulae held by gravity
  2. 4. large dense sphere of gas undergoing nuclear fusion
  3. 6. slide
  4. 8. seafloor spreading
  5. 10. brightest stars on HR Diagram
  6. 12. 24 hours
  7. 14. separate
  8. 16. tilt
  9. 18. birthplace of stars
  10. 19. cold air (convection)
  11. 20. coolest stars found on HR Diagram
  12. 21. puzzle pieces
Down
  1. 2. lousy weather
  2. 3. dimmest stars on HR Diagram
  3. 5. severe storms
  4. 7. increased temps
  5. 9. happy weather
  6. 11. hot air(convection)
  7. 13. collide
  8. 15. 365 days
  9. 17. hottest stars found on HR Diagram