Plate Tectonics.

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Across
  1. 2. seven large slabs that cover earth
  2. 4. When all the continents were combined
  3. 7. 2 tectonic plates repelling
  4. 8. energy waves traveling from an earthquake
  5. 10. 2 tectonic plates sliding passed.
Down
  1. 1. 2 tectonic plates moving towards eachother
  2. 3. Less dense/thick (made with granite)
  3. 5. Top part of the mantle
  4. 6. dense/thick (made of igneous rock)
  5. 9. lithosphere