Plate Tectonics

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Across
  1. 3. A volcanic mountain that forms along a convergent boundary.
  2. 7. A region where two tectonic plates are moving towards each other and one is forced beneath the other.
  3. 9. The boundary between the Earth's crust and mantle.
  4. 10. The process by which new oceanic crust is formed at a divergent boundary.
  5. 11. The process by which one tectonic plate moves past another.
  6. 15. The theory that explains how the Earth's lithosphere is broken into several plates that move relative to each other.
  7. 17. A type of seismic wave that moves through the Earth's interior and can only be detected with special instruments.
Down
  1. 1. A chain of volcanic islands that form along an oceanic-oceanic convergent boundary.
  2. 2. The layer of the Earth that is located beneath the crust and is composed of dense, solid rock.
  3. 4. A boundary where two tectonic plates are moving towards each other.
  4. 5. The supercontinent that existed approximately 300 million years ago.
  5. 6. A boundary where two tectonic plates are moving away from each other.
  6. 8. A type of seismic wave that moves through the Earth's interior and can be detected on the Earth's surface.
  7. 9. A type of boundary where two plates are moving apart and magma rises to fill the gap between them.
  8. 12. The point on the Earth's surface directly above the focus of an earthquake.
  9. 13. A section of the Earth's lithosphere that moves as a single unit.
  10. 14. The study of the Earth's crust and the processes that shape it.
  11. 16. The type of boundary where two plates slide past each other.
  12. 17. The process by which one tectonic plate moves beneath another and sinks into the mantle