Across
- 2. cause tectonic plates to drift
- 4. valley that forms at a divergent boundary
- 7. 2 tectonic plates sliding past each other
- 9. 2 tectonic plates spreading apart
- 10. what earth looked like 200 million years ago
Down
- 1. __zone where one plate dunks under the other
- 3. long, narrow dip on the seafloor from subduction
- 5. Earth's outermost layer, broken into pieces
- 6. 2 tectonic plates pushing together
- 8. molten rock; located in the mantle