Across
- 2. when one part of the lithosphere goes under another plate
- 4. an enormous wave produced by seismic activity
- 5. a process by which new rock is added to the ocean floor along the boundary between diverging plates
- 7. a major advance in floor mapping that uses sound waves
- 11. the supercontinent that existed millions of years ago
- 13. rocks and crust that are produced at the MidAtlantic Ridge
- 15. tiny algae and animals that float in the ocean the water and are carried currents
- 18. scientist who theorized continental drift
- 19. a steep sided canyon in the ocean floor
- 21. the rocky surface layer of the Earth
- 23. organisms that inhabit the ocean floor
- 24. Earth's molten inner most layer
- 25. the way the continents fit together - like a...
- 27. gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent
Down
- 1. smooth nearly flat region of the ocean floor
- 3. Boundary type where two plates ram at each other
- 6. hot liquid-solid form of the Earth's inner core
- 8. the one-world ocean that existed millions of years ago
- 9. Earth's plate moving away in opposite directions
- 10. a type of underwater vehicle used for exploration and to take samples from very deep places
- 12. Squid these animals dive between 90 - 300 meters
- 14. the point in the mantle where an earthquake begins
- 16. the layer of the Earth right under the crust
- 17. the most dense type of crust under sea water
- 20. what flows through a food web or food chain
- 22. all the feeding relationships in an ecosystem
- 26. study of the features and measurement of the seafloor