Oceans Crossword puzzle

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Across
  1. 2. A submarine mountain
  2. 5. A seafloor mountain system formed by plate tectonics
  3. 6. Low-relief zone of accumulated sediments that lies between the continental slope and the abyssal plain
  4. 9. A raised mass of water on the surface of water, especially the sea, which is caused by the wind or by tides making the surface of the water rise and fall
  5. 12. The ocean floor in those parts of the oceans that are more than 2000 m deep
  6. 16. The slope between the outer edge of the continental shelf and the deep ocean floor
  7. 17. An opening in the sea floor out of which heated mineral-rich water flows
Down
  1. 1. A ridge of rock in the sea formed by the growth and deposit of coral
  2. 3. The top of a mountain or hill
  3. 4. A type of excavation or in the ground that is generally deeper than it is wide
  4. 6. The outer edge of continental crust abutting oceanic crust under coastal waters
  5. 7. A small watercraft designed to operate underwater
  6. 8. Process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge
  7. 10. An elongate depression in the seafloor that is characteristically shallower, shorter, narrower, and topographically gentler than oceanic trenches
  8. 11. A seamount with a flat top
  9. 13. Flat seafloor area at an abyssal depth
  10. 14. A steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures
  11. 15. The line along which a large body of water meets the land
  12. 18. A linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift