tecplat

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Across
  1. 2. / Theory that continents move over time.
  2. 4. / Boundary where two plates collide.
  3. 7. / A crack in Earth's crust where movement occurs.
  4. 11. / Boundary where plates slide past each other.
  5. 13. / Process where one plate moves under another.
  6. 17. / Semi-fluid layer below the lithosphere.
  7. 18. / Sudden shaking of Earth's surface.
  8. 20. / Area around the Pacific Ocean with many volcanoes.
  9. 21. / Deep depression in the ocean floor.
  10. 22. / The thick layer of rock beneath Earth's crust.
Down
  1. 1. / The outermost layer of Earth.
  2. 3. / Boundary where two plates move apart.
  3. 5. / The edge where two tectonic plates meet.
  4. 6. / Molten rock beneath Earth's surface.
  5. 8. / Rigid outer layer of Earth, including the crust.
  6. 9. / A deep valley formed at a divergent boundary.
  7. 10. / A mountain that erupts lava and ash.
  8. 12. / Ancient supercontinent that once existed.
  9. 14. / Large section of Earth's crust that moves.
  10. 15. / Relating to the structure of Earth's crust.
  11. 16. / The innermost layer of Earth.
  12. 19. / Volcanic region fed by heat from deep within Earth.