Plate Tectonic Boundaries & Features

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Across
  1. 4. Proposed the theory of Continental Drift
  2. 8. The theory explaining the movement of Earth's lithospheric plates
  3. 10. The process of one tectonic plate sliding beneath another
  4. 12. The process of new oceanic crust forming at mid-ocean ridges
  5. 13. A supercontinent that existed millions of years ago
  6. 15. A boundary where tectonic plates move toward each other
Down
  1. 1. Dense tectonic plates that form the ocean floor
  2. 2. Large, rigid sections of Earth's lithosphere that make up continents
  3. 3. An underwater mountain range where new oceanic crust forms
  4. 5. A boundary where tectonic plates move away from each other
  5. 6. Openings in the seafloor from which hot, mineral-laden water emerges
  6. 7. The rigid outer layer of Earth, including the crust and upper mantle
  7. 9. Boundary A boundary where tectonic plates slide past each other horizontally
  8. 11. The idea that continents have moved over geological time
  9. 14. A deep, narrow depression in the ocean floor, often associated with subduction zones