Ch. 2 Review

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Across
  1. 2. the largest planet
  2. 3. the Earth's crust is broken into ____ plates
  3. 5. the largest ocean
  4. 7. _______ Trench is deepest part of oceans
  5. 8. the smallest planet
  6. 10. when liquid water turns into water vapor
  7. 12. Only 3% of Earth's water is __________
  8. 13. the third planet from the Sun
  9. 14. a crack in the Earth's surface
  10. 17. air surrounding the earth
  11. 19. sphere that includes all Earth's land
  12. 20. type of erosion that created the Great Lakes
  13. 21. gas that makes up 80% of atmosphere
  14. 23. when water vapor turns into liquid water
  15. 24. one of the metal's that makes up the Earth's core
  16. 26. layer of earth between core and crust
  17. 28. tallest mountain on Earth
Down
  1. 1. can be rain, snow, sleet, or hail
  2. 4. _____ theory says the earth's continents have spread apart
  3. 6. an underwater spring or river
  4. 9. sphere that includes all Earth's water
  5. 11. a small rock in outer space
  6. 15. the breakdown of rock on Earth's surface
  7. 16. hot, molten metal inside the Earth
  8. 18. Jupiter, Saturn, Uranus, and Neptune are the _____ planets
  9. 22. sphere that includes all Earth's life
  10. 25. Mercury, Venus, Earth, and Mars are the _____ planets
  11. 27. The Ring of _____ is where most volcanoes and earthquakes occur