Plate Motion

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Across
  1. 4. When Earth’s surface shakes
  2. 8. When two plates are moving away from each other
  3. 9. Earth’s main continuous areas of land
  4. 10. The pieces making up Earth's outer layer
  5. 12. Hot liquid rock on Earth's surface
  6. 14. When two plates are moving towards each other
  7. 15. The hottest layer of Earth
  8. 17. Slow pulling apart of land caused by plate activity
  9. 19. Hot Liquid rock below Earth's surface
  10. 20. A set of interacting part forming a complex whole
  11. 21. The landform formed at an underwater Convergent plate boundary
Down
  1. 1. Where two plates meet
  2. 2. To examine in detail for a purpose
  3. 3. The top layer of something
  4. 5. The soft, solid layer of rock below Earth's plates
  5. 6. Underwater mountain range formed at a divergent plate boundary
  6. 7. A diagram of the inside of something
  7. 11. A feature that forms on the surface of a planet
  8. 13. How fast something happens
  9. 16. The sudden pushing of something
  10. 18. A natural spring sending hot water and steam suddenly into the air