Plate Tectonics

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Across
  1. 3. A mountain formed by volcanic activity.
  2. 4. The Plate lies west of South America.
  3. 6. The supercontinent that existed millions of years ago.
  4. 7. A scientist who proposed continental drift.
  5. 9. The layer of Earth made of solid rock plates.
  6. 11. Molten rock beneath Earth’s surface.
  7. 12. The point inside Earth where an earthquake begins.
  8. 14. The process where one tectonic plate moves under another.
  9. 15. A deep valley formed at divergent boundaries.
  10. 16. A boundary where two plates collide.
  11. 17. A crack in Earth’s crust where movement occurs.
  12. 18. Waves in Earth’s crust caused by sudden movement.
  13. 19. A boundary where plates slide past each other.
Down
  1. 1. What theory explains the movement of Earth’s crustal plates?
  2. 2. The giant sections of Earth’s crust.
  3. 5. A boundary where two plates move away from each other.
  4. 8. The layer beneath the lithosphere that plates move on.
  5. 9. Hot melted rock that reaches Earth’s surface.
  6. 10. The shaking of Earth caused by tectonic movement.
  7. 13. The theory that Earth’s continents were once joined together.