Oceanography

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 6. How tightly packed the matter in something is (7)
  2. 8. The aggregate of small plant and animal organisms that float or drift in great numbers in fresh (8)
  3. 9. A ditch dug as a fortification having a parapet of the excavated earth (6)
  4. 11. Photosynthetic or plant constituent of plankton (13)
  5. 15. Organisms that live at or near the bottom of a sea (7)
  6. 16. The periodic rise and fall of the sea level under the gravitational pull of the moon (plural) (5)

Down

  1. 1. A bottomless gulf or pit (5)
  2. 2. The aggregate of actively swimming animals in a body of water ranging from microscopic organisms (6)
  3. 3. A rounded elevation (5)
  4. 4. A wave that is blown by the wind so its crest is broken and appears ___ (8)
  5. 5. An underwater mountain rising above the ocean floor (8)
  6. 7. An inclination contrary to the strongest or prevailing feeling (8)
  7. 10. The taste experience when common salt is taken into the mouth (8)
  8. 12. The top line of a hill, mountain, or wave (5)
  9. 13. One of a series of ridges that moves across the surface of a liquid (4)
  10. 14. The action of ___ (5)