Across
- 2. top mechanical layer
- 5. puzzle peices
- 7. ingredients
- 8. 33%
- 9. collide
- 12. 66%
- 14. drifting away
- 15. third mechanical layer
- 17. second mechanical layer
- 18. harry hess
- 19. san andreas
Down
- 1. how layers react to pressure
- 3. plates collide
- 4. slide
- 6. deepest layer
- 8. 1%
- 10. the drifting of plates
- 11. liquid layer
- 13. squeezing
- 16. how plates move