Across
- 2. device used to map the ocean floor
- 4. Geology Professor
- 6. plates moving together
- 7. heating, rising, cooling, and sinking
- 8. plates sliding past each other
- 9. plates moving away from each other
Down
- 1. plastic-like layer of the mantle
- 3. German meteorologist
- 5. oceanic plate goes underneath a continental