science

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