Across
- 2. the hottest part of earth
- 6. what shots out of volcanos
- 8. when plates move upwards with eachother
- 9. when the seafloor spreads
- 12. hardened lava
- 14. the theory of plate tectonics developed in the 1960
- 16. an air vent to earths core
- 18. vent at the bottom of the ocean
- 20. a long narrow ditch
Down
- 1. where plates meet
- 3. a series of shaking in the earth
- 4. the deepest part in the marianis trech
- 5. the large amount of land that moves the earth
- 7. the first name for the land
- 8. the deepest trench in the world
- 10. the top of the oceans water
- 11. outside of the core
- 13. when plates move and the grounderneath doesn't
- 15. just underneath earths crust
- 17. the outer most layer of the earth
- 19. scale the instrument to measure earthquakes