Across
- 4. a sudden shake of the ground.
- 6. occurs at divergent boundaries
- 7. a mountain or hill typically conical haveing
- 9. A thin layer of crust that underlies the ocean basins
- 11. tectonic plates moving away from each othe in oppsite divections
Down
- 1. two plates sliding past eachthere
- 2. or vent through lava
- 3. two tectonic plates come together
- 5. hot magma rising in the mantle caused the seafloor
- 8. molten rock housed in the mantle
- 10. Layer of rock which forms the continents