The Theory of Plate Tectonics

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Across
  1. 5. The solid rocky surface and the interior of the planet.
  2. 6. The air that surrounds Earth.
  3. 8. German scientist who came up with the theory of the continental drift.
  4. 9. Causes plates to move apart.
  5. 10. Sometimes when two continental plates converge, the continental crust gets rumpled and ________.
  6. 12. One of the most important scientific developments in modern times.
  7. 15. When two plates meet or ________.
  8. 16. When one plate might slide under another.
  9. 17. Circular movement in the mantle, occurs ad the plates move around.
  10. 18. All the living things on Earth.
Down
  1. 1. Underneath the lithosphere is a portion of the mantle which is fluid with special properties.
  2. 2. The part that we stand on and that covers the bottom of all the seas.
  3. 3. Earth's water, both in the ocean and on the land.
  4. 4. Tectonic plates floating on this portion of the _________ that is fluid.
  5. 7. On the US research ship Atlantic, they found that the sediment layer on the floor of the Atlantic was much thinner than originally thought.
  6. 11. Sections of the plate can get folded and ________.
  7. 13. The Earth's crust is composed of solid ______________ floating on the mantle.
  8. 14. A mountain range resulted from a _________ convergence.