Midterm Review before Christmas Break

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Across
  1. 1. scientist that created three laws
  2. 3. the last stage of massive, but not the most massive stars
  3. 6. indicator of a planet that can support life
  4. 8. a very old, small, dense star with low luminosity
  5. 11. stars spend most of their lives here
  6. 13. how long it takes for the planet to orbit the star once
  7. 15. when two plates are moving towards one another
  8. 16. heaviest element a star can produce before supernova
  9. 19. the area in which a planet can support life
  10. 21. the inward force on a star. every object in the universe has this
  11. 22. ocean with most tectonic activity
  12. 23. the earth orbits in an ________
  13. 26. when two plates are sliding past one another
  14. 29. the study of looking at elements that are in a star and their absorption lines
  15. 30. the perfect planet for life
  16. 31. a celestial body made of ice that has a highly ellipitcal orbit
Down
  1. 2. area surrounding the Pacific ocean that gets a lot of tectonic activity
  2. 4. when two plates are moving away from one another
  3. 5. the shift of waves when the energy is moving towards you
  4. 7. can result if an earthquake happens in the ocean
  5. 9. the measurement for how elliptical and orbit is
  6. 10. island in the world that is known for the natural disasters it gets
  7. 12. a sun like star will move to this in its second stage of life
  8. 14. the shift of waves when the energy is moving away from you
  9. 15. the gas that has allowed for a lot more global warming
  10. 17. the last stage of the most massive stars
  11. 18. a type of mountain that can cause mass destruction
  12. 20. the sudden release of energy from the rocks in the earth
  13. 24. how much energy a star is giving off
  14. 25. our star
  15. 27. H=H=He+Energy
  16. 28. x axis on HR diagram