Across
- 3. ________ is a series of vibrations of earth.
- 4. _______ is a geological process in which the edge of the lithospheric plate slides underneath another.
- 5. Also known as seismic wave.
- 8. ________ is the process which occurs at the mid-ocan ridge.
- 10. The rigid outermost shell of earth is broken into __________.
- 14. The spreading of the seafloor.
Down
- 1. Is the edge of a tectonic plate.
- 2. Is the transfer of heat
- 6. Maurice Ewing and Bruce Heezen discovered the _________.
- 7. The theory that the continents are slowly spreading apart.
- 9. The theory of _________ is that the outer layer of the earth is divided into a couple dozen plates that move across the earths surface.
- 11. When two plates collide.
- 12. When two plates move sideways with each other.
- 13. A long steep sided depression in the ocean floor.