Across
- 2. how to measure earthquakes
- 3. a valley
- 7. 2nd wave to hit seismograph
- 8. a narrow section on the ocean floor
- 10. caused by transform boundary
- 11. sinking
- 13. moving plates
- 16. gradual destruction
- 17. above earthquake
- 18. a numerical earthquake scale
- 19. Move towards each other
Down
- 1. Move past each other
- 2. when new ocean crust forms
- 4. ridge in the atlantic ocean
- 5. first wave to hit seismograph
- 6. Move away from each other
- 9. straight line
- 12. zone where plates meet
- 14. above stratosphere
- 15. supercontinent