nothings
Across
- 2. feature of divergent
- 4. new crust on ocean floor
- 5. Plates move apart
- 6. a molten mixture of rock forming
- 9. undersea valley; deepest part of ocean
Down
- 1. move continents across earth at slow speeds
- 3. the shaking from movement in earth's crust
- 4. sinking movement of ocean floor back into the mantle
- 7. lower mantle
- 8. crust on surface