Across
- 4. Earth's solid outer crust
- 5. the formation of new areas of oceanic crust
- 8. raise the level of
- 11. oceanic trench area marginal to a continent
- 14. moved over geologic time
- 15. an unattractive or unsatisfactory feature
Down
- 1. a sudden and violent shaking of the ground
- 2. when two tectonic plates move away from each other
- 3. When two plates come together
- 6. places where plates slide sideways past each other
- 7. chain of volcanoes formed above a subducting plate
- 9. pieces of Earth's crust and uppermost mantle
- 10. divergent, convergent, and transform plate boundaries
- 12. a lot of action
- 13. a lowland region that forms where Earth's tectonic plates move apart