Across
- 3. Caused by convergent boundary
- 6. When two plates overlap
- 7. Less dense plate goes underneath the more dense plate
- 9. Two plates grinding past each other
Down
- 1. A theory of the Earth's crust
- 2. Two plates moving the opposite direction
- 4. Number of main tectonic plate boundaries
- 5. _______ from mantle causes plates to drift
- 8. Molten rock
- 10. A crack, break, or gap