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5 Written questions

5 Matching questions

  1. Oceanic Zone
  2. Intertidal Zone
  3. Benthic Zone
  4. Reverse Osmosis Desalination
  5. Sublittoral Zone
  1. a The bottom region of oceans and bodies of fresh water.
  2. b The shallowest benthic zone that lies between the low-tide and high-tide lines.
  3. c The 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.
  4. d 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.
  5. e Extends into the deep waters beyond the continental shelf.

5 Multiple choice questions

  1. A process of removing salt from ocean water.
  2. A floating layer of sea ice that completely covers an area of the ocean surface.
  3. Dissolved solids that make up about 3.5% of the mass of ocean water. These dissolved solids give the ocean its salty taste.
  4. A method of desalination where water is frozen. Then the first ice crystals that form do not contain salt. The ice can be removed and melted to obtain fresh water.
  5. Elements that exist in very small amounts.
    ex: gold, zinc, and phosphorus.

5 True/False questions

  1. PlanktonThe mass of mostly microscopic organisms that float or drift freely in the waters of aquatic (freshwater and marine) environments.

          

  2. NektonThe mass of mostly microscopic organisms that float or drift freely in the waters of aquatic (freshwater and marine) environments.

          

  3. DistillationA process of removing salt from ocean water.

          

  4. AquacultureA floating layer of sea ice that completely covers an area of the ocean surface.

          

  5. ThermoclineA layer in a body of water in which water temperature drops with increased depth faster than it does in other layers.