Across
- 2. where part of the ocean floor goes into the mantle and creates new ocean material
- 6. part of the crust and upper mantle
- 7. supercontinent 300 million years ago
- 8. slide past
- 15. earthquakes
- 16. has the convection current
- 17. in the mantle, warms the earth
- 18. an instrument used to locate mid ocean ridges
- 19. divide
Down
- 1. organism preserved in rock
- 3. force that builds up, volcanoes
- 4. breaks in earths crust, San Andreas _____
- 5. the act of material spreading out from the mid ocean ridges
- 7. result of a force pushing on an object
- 9. the theory that the continents once were together and the drifted apart
- 10. collide
- 11. where pieces of land diverges
- 12. where new ocean floor material comes up from the mantle
- 13. pieces on the lithosphere that are broken into pieces
- 14. underwater canyons