science vocab

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Across
  1. 3. middle of earth
  2. 7. the outermost rigid layer of earth
  3. 10. the strong lower part of mantle
  4. 11. tectonics- theory that states Earths outer layer is broken into large ,slowly moving pieces
  5. 12. top layer of earth
  6. 13. boundaries- form when two plates move away from each other
  7. 14. the 2nd layer of earth
Down
  1. 1. the movement of matter results from density caused by variations in temp.
  2. 2. the process by which rocks change shape when under stress
  3. 4. boundaries- a boundary at which two plates move past each other horizontally
  4. 5. layer of weak or soft mantle that is made of rock that flows slowly
  5. 6. floor spreading- molten rock rises through cracks along mid ocean ridges
  6. 8. boundaries- form when two plates collide
  7. 9. plates- each piece of lithosphere
  8. 11. super continent