Across
- 3. Where two tectonic plates are moving away from each other.
- 5. where two tectonic plates come together.
- 6. A thin layer of crust that underlines the ocean basins.
- 7. Occurs at divergent boundary.
- 8. layer of rock which forms the continents.
- 9. discovered that magma was riding on the sea floor causing it to
- 10. Developed the theory that the continents drift.
Down
- 1. molten rock.
- 2. The engine that moves the plates
- 4. where two tectonic plates slide past each other.