Science Vocabulary

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Across
  1. 2. it is broken into pieces separated by cracks
  2. 4. tectonics- plate motions into a single theory
  3. 6. valley- pieces of Earth's crust diverge on land, a deep valley.
  4. 7. dark, fine grained rock found in the crust
  5. 8. earths life-sustaining air
  6. 9. the ocean floor sinks beneath a deep ocean trench and back into the mantle again.
  7. 12. middle layer of the earth
  8. 14. boundary- plates move apart
  9. 15. all Earth's water
Down
  1. 1. boundary- plates come together
  2. 3. breaks in Earth's crust where rocks have slipped past each other.
  3. 5. boundary- plates slip past past along.
  4. 10. ocean trenches- the ocean floor plunges into deep water canyons.
  5. 11. vital layer of gases
  6. 13. includes Earth's solid layers