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