Across
- 6. Constant moving slabs of rock
- 7. Rubbing on each other
- 9. Outer layer of the earth
- 10. A scientific instrument used to detect
- 14. Spreading apart
- 16. record the physical vibrations and waves
- 17. Mountains of the ocean
- 18. Where humanity exists
- 19. Inner layers of the earth
- 20. Largest waves
- 21. Created by boundaries
- 22. Theory of plate movements
Down
- 1. An opening in Earths crust that molten rock
- 2. Depression in the ground
- 3. Second biggest wave
- 4. Super continent
- 5. Violent shaking of the ground
- 8. Any preserved remain of a living organism
- 11. The measurement of the earthquakes power
- 12. Smallest wave
- 13. One goes up one goes down
- 15. from
- 23. Coming together