Set 1 Plate Tectonics

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Across
  1. 7. The idea that continents moved over time
  2. 8. active region where most earthquakes and volcanoes occur
  3. 10. destroy or tear down existing formations
  4. 12. A deep ocean valley created at a convergent boundary
  5. 13. When one plate sinks under another
  6. 14. The soft flowing layer beneath the lithosphere
  7. 15. boundary where plates slide past each other
Down
  1. 1. tectonic boundary where two plates move away from each other
  2. 2. boundary where plates collide
  3. 3. the scientific theory that Earth's outer shell divided into several large, rigid plates that glide slowly
  4. 4. developing the theory of continental drift
  5. 5. massive rigid slabs of solid rock composing Earth’s outer shell
  6. 6. natural processes that build up the Earth’s surface by creating new landforms
  7. 9. Earth's continents and ocean basins have remained in their current positions and have not changed
  8. 11. The supercontinent