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5 Written questions

5 Matching questions

  1. Nodules
  2. Reverse Osmosis Desalination
  3. Bathyal Zone
  4. Plankton
  5. Benthic Zone
  1. a The bottom region of oceans and bodies of fresh water.
  2. b A popular method for desalinating ocean water. It includes the use of special membranes that allow water under high pressure to pass through and that block the dissolved salts.
  3. c The mass of mostly microscopic organisms that float or drift freely in the waters of aquatic (freshwater and marine) environments.
  4. d Begins at the continental slope and extends to a depth of 4,000 meters.
    animals that live there: octopi, sea stars, and brachiopods.
  5. e Potato-shaped lumps of minerals that are found on the abyssal floor of the ocean.

5 Multiple choice questions

  1. Elements that exist in very small amounts.
    ex: gold, zinc, and phosphorus.
  2. Has no sunlight because it begins at a depth of 4,000 meters and extends to a depth of 6,000 meters.
    organisms that live there: sponges and worms
  3. The shallowest benthic zone that lies between the low-tide and high-tide lines.
  4. A layer in a body of water in which water temperature drops with increased depth faster than it does in other layers.
  5. A measure of the amount of dissolved salts in a given amount of liquid. It can be written as salinity = 35 parts per thousand, or 35%.

5 True/False questions

  1. FreezingThe movement of deep, cold, and nutrient-rich water to the surface.


  2. UpwellingThe movement of deep, cold, and nutrient-rich water to the surface.


  3. Pelagic ZoneExtends into the deep waters beyond the continental shelf.


  4. Sublittoral ZoneThe shallow benthic zone that most organisms live in; located on the continental shelves and is populated by organisms such as sea stars, brittle stars, and sea lilies.


  5. Sea SaltsThe ratio of the mass of a substance to the volume of the substance; commonly expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases.