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  • 1. Far below the surface of the sea, generally by thousands of feet (2 words).
  • 6. Small points of land projecting into a body of water from the shore.
  • 8. An element that often combines with metals to form important ore minerals near hydrothermal vents.
  • 9. A compound that contains the element represented by the chemical symbol "S."
  • 12. The planet Earth is unique in having an unusual abundance of this compound in liquid form.
  • 15. The celestial body whose gravity is responsible for periodic tides seen in bodies of water.
  • 16. An ocean carbonate rock formation made up of billions of tiny skeletons of sea creatures.
  • 17. Periodic rising and falling of water levels, caused by the pull of gravity of celestial bodies.
  • 18. An underwater mountain or volcanic cone, whose top has been flattened by wave erosion.
  • 21. An extension of the perimeter of the continent, made up of sediments. (2 words)
  • 24. Undersea hydrothermal vent that precipitates a dark cloud of metallic minerals. (2 words)
  • 26. A rhythmic displacement of water, caused by the movement of energy through the water.
  • 27. Temperature condition oat the mid-ocean ridges.
  • 29. Type of sediment stratification where grain size gradually changes. (2 words)
  • 31. Water that contains a high concentration of dissolved minerals is said to be ----.
  • 33. Winds that move surface water away from the shore often cause this cold, deep water to move upwards.
  • 34. Large streams of ocean water, moving continuously in about the same paths.


  • 1. The movement of sea, ice, or vessels, caused by ocean currents or winds.
  • 2. To obtain nourishment by ingestion of food.
  • 3. A triangular-shaped deposit of sediments found at the mouth of a river where it meets the ocean.
  • 4. A curious type of large, red worm that lives on the ocean floor near mid-ocean ridges.
  • 5. A type of density current that moves along the bottom slope of a body of standing water.
  • 6. A large submarine mountain that rises thousands of feet above the ocean floor.
  • 7. A large body of salt water that is smaller than an ocean.
  • 10. Sodium chloride.
  • 11. Type of potato-shaped mineral deposit containing low grade ore, mined from the ocean floor. (2 words)
  • 13. A long narrow depression of the deep sea floor, having relatively steep sides.
  • 14. A severe weather pattern that stops ----- of 75 m.p.h. wind speed is a tropical storm.
  • 19. Measure of the amount of dissolved salt in the ocean.
  • 20. --- tide is marked by coastal water levels at their minimum.
  • 22. The earth's surface ---- is about 72% ocean.
  • 23. The relatively flat, smooth ocean floor is known as the ------- plain.
  • 25. A ring-like island, or island encircling a lagoon, generally composed of coral.
  • 26. The driving force behind the ocean waves.
  • 27. ---- tide is marked by coastal waters at their maximum level.
  • 28. Oceanographers may study the chemical content of sea water by taking a ------.
  • 30. To release.
  • 32. Preferential movement of objects that are denser than water.

Copyright © 1989 by William K. Tong