layers of the earth & tectonic plates

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Across
  1. 2. rigid layer made up of the uppermost part of the mantle and the crust.
  2. 4. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
  3. 5. the layer of rock that forms the Earth's outer surface.
  4. 11. a large continuous mass of land conventionally regarded as a collective region.
  5. 12. german Scientist who developed the Theory of the Continental Drift in 1912.
  6. 14. plates slide past each other horizontally.
  7. 15. deep valley where two plates move apart
Down
  1. 1. soft layer of the mantle on which the lithosphere floats.
  2. 3. the part of the outer rocky layer of the earth that is under the oceans and is thinner than the layer under the land.
  3. 6. deep canyon on the ocean floor.
  4. 7. break or crack in the Earth's lithosphere along which rocks move.
  5. 8. thickest layer of the Earth; it consists of two layers - the lithosphere and the asthenosphere.
  6. 9. coming closer together.
  7. 10. shift in different directions.
  8. 13. the name of the single landmass that broke apart about 225 million years ago.