Across
- 3. the process of eroding
- 7. a long narrow ditch
- 9. ridges, a long, seismically active submarine ridge system
- 10. how do the ocean say hi?
- 11. the rigid, outermost layer of the Earth's rocks and minerals,
Down
- 1. a slowly moving mass or river of ice
- 2. Divide, a naturally occurring boundary or ridge separating a continent's river systems
- 4. an underwater mountain with steep sides
- 5. a low oval mound or small hill
- 6. matter that settles to the bottom of a liquid
- 8. a mass of rocks and sediment
- 12. a long ridge of gravel and other sediment