Plate Tectonics Crossword

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Across
  1. 2. Layer consisting of the crust and part of the upper mantle
  2. 3. The only liquid layer of the Earth.
  3. 5. To slide past each other.
  4. 7. Depression in the Earth's surface
  5. 8. To move towards each other.
  6. 10. The Earth's outermost layer.
  7. 12. Responsible for forming ocean basins.
  8. 15. A shift in tectonic plates.
  9. 16. An area that is described as abnormally volcanic.
  10. 17. The layer of the earth between the crust and the core.
Down
  1. 1. Result of heating of the lower mantle, causing it to expand.
  2. 4. American Geologist responsible for the sea floor spreading theory.
  3. 6. German scientist responsible for the continental drift theory.
  4. 9. To move away from each other.
  5. 11. 250 million year old super-continent.
  6. 13. The outer layer of the earth.
  7. 14. The location where a tectonic plate is pushed down onto the mantle.