Plate tectionic theroy

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Across
  1. 3. a long narrow hilltop, mountain range, or watershed.
  2. 4. the hypothesis, originating in the early 20th century, that Earth's continents move or drift relative to each other over geologic time.
  3. 5. , the scientist who discovered plate tectonic theory
  4. 7. a natural upward projection of the earth's surface, higher and steeper than a hill and often having a rocky summit.
  5. 8. , when 2 plates slide past eachother
  6. 9. a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements.
  7. 11. ,
Down
  1. 1. , when 2 plates move away from eachother
  2. 2. , the scientist who discovered continentalial drift theory
  3. 6. the shaking of the surface of Earth resulting from a sudden release of energy in the lithosphere
  4. 9. , a large landmass before the continents drifted
  5. 10. , when 2 plates come together