Across
- 2. the lithosphere is said to be broken up into these
- 5. underwater mountain ranges where new rock forms
- 7. portion of the mantle where convection occurs
- 8. plate boundary where plates are moving apart
- 10. scientist who proposed the theory of plate tectonics
- 11. plate boundary where plates are coming together
- 13. technique that uses sound waves to measure depth of the sea floor
- 14. process in which ocean crust is pushed under the continental crust
- 16. type of heat transfer in fluids
Down
- 1. one piece of evidence used by wegener
- 2. the supercontinent; 1 land mass
- 3. geologist that proposed the theory of sea-floor spreading
- 4. the innermost layer of the earth
- 6. meteorologist that proposed the theory of continental drift
- 9. solid portion of crust plus upper mantle
- 11. outermost layer of the earth
- 12. plate boundary where plate are slipping past each other
- 15. the question that wegener could not answer in his theory
- 17. deep underwater canyons where subduction takes place