sea floor spreading continental drift
Across
- 1. The person who discovered seafloor spreading.
- 3. The theory that stated all continents were once connected but have since separated.
- 4. ___________ shaped rocks that help prove sea-floor spreading.
- 6. What evidence was found in warm climate areas proving continental drift has occurred.
- 9. The process that happens at a trench where one plate sinks beneath the other.
- 11. The tool that helped map out the mid ocean ridge.
- 13. The name of the supercontinent that existed 300 million years ago.
Down
- 2. The process of new sea floor being created at the mid ocean ridge and recycled through subduction at deep ocean trenches.
- 5. A long chain of underwater mountains and volcanoes where magma comes out and becomes new sea floor.
- 7. South America and this continent are getting further away from each other each year.
- 8. The further away from the ridge the _________ the rock.
- 10. What was found in Antarctica to help prove the theory of continental drift?
- 12. The person who came up with the theory of continental drift.