OceanWorld


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Question 1. Currents are water movements created by?

  1. the wakes of large ocean-going vessels (ships).
  2. friction between moving air (wind) and the water's surface.
  3. earthquakes.
  4. none of the above

Question 2. Surface currents:

  1. are wind-driven.
  2. are the only currents that most people see.
  3. affect about 20% of the ocean's volume(total water)
  4. all of the above

Question 3. Deep-ocean currents are:

  1. non-existent
  2. wind-driven
  3. density-driven
  4. circumpolar

Question 4. Winds and ocean currents are ultimately created by the:

  1. equator
  2. sun
  3. moon
  4. all of the above.

Question 5. Winds and ocean circulation (currents) are created as a result of:

  1. Moon's orbit around Earth
  2. satellites orbiting Earth.
  3. unequal solar heating of the oceans and the atmosphere.
  4. 1 & 2

Question 6. A "south wind":

  1. blows out of the north to the south.
  2. blows out of the south to the north.

Question 7. A "northerly current":

  1. flows to the north
  2. flows out of the north.

Question 8. Once surface currents are set in motion, they are affected by three other factors:

  1. Coriolis effect, presence of coasts, & horizontal pressure gradient
  2. Gyres, eddies, & geostrophic flow
  3. Hurricanes, earthquakes, & tsunamis
  4. Ships, whales, & icebergs

Question 9. Only one ocean current flows unimpeded (without obstruction or barriers) around Earth. It is the:

  1. Gulf Stream Current
  2. California Current
  3. Antarctic Circumpolar Current
  4. Aghulas Current

Question 10. A deflection of ocean water--to the right in the Northern
Hemisphere and to the left in the Southern Hemisphere--
caused by Earth's rotation is called:

  1. The Coriolis effect
  2. The Langmuir circulation
  3. A gyre
  4. Horizontal pressure gradient

Question 11. Variations in the ocean's circulation can lead to variations in the heat transport and thus lead to variations in:

  1. coastlines
  2. shipping lanes
  3. occurrence of tides
  4. weather patterns

Question 12. One important variation in ocean circulation is the periodic change in the equatorial circulation known as:

  1. Coriolis Effect
  2. El Niño
  3. WOCE
  4. TOPEX/Poseidon

Question 13. How do we currently measure currents?

  1. drift bottles
  2. satellites
  3. current meters
  4. all of the above

Click here for answers to the quiz.