Across
- 2. a low difference between high and low waters
- 3. a tool for measuring earthquakes
- 7. studies earthquakes
- 9. second part of the earths crust
- 14. a great difference between high and low waters
- 15. has bigger gravitational pull on the tides
- 16. scientist believed all the continents were once a whole
- 18. before the inner core
- 19. an obscuring path of the light
- 20. forms a volcano when spread
Down
- 1. hold the earth together
- 4. the top layer
- 5. exploding mountains
- 6. high and tall
- 8. drift and is at the beach
- 10. a boundary where crust is destroyed
- 11. inside of the layers
- 12. a boundary where nor crust is destroyed or produced
- 13. a boundary where new crust is generated as the plates pull away from each other
- 17. a change of color and weather