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Week Six Oceanography

Paige Kraemer 9 questions

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Questions in this quiz (9)

  1. 1Because there is permanent continental ice on Greenland and Antarctica today, we are in an Ice Age. We are in a warm phase of the Ice Age called the interglacial.
    1. ATrue
    2. BFalse
  2. 2Which of the following is true about the Antarctic Bottom Water and its formation?
    1. AIt is the densest water in the world ocean
    2. BSea ice formation increases the density of the surrounding water, because ice formation rejects salt
    3. CIt forms only around Antarctica
    4. DKatabatic winds promote sea ice formation
    5. EAll of the above
  3. 3When Ekman spiral is integrated vertically, there is a net transport called the Ekman transport that is oriented perpendicular to the prevailing winds in both hemispheres.
    1. ATrue
    2. BFalse
  4. 4The Milankovitch theory of glacial-interglacial cycle consists of:
    1. AChanges in Earth orbit around the Sun: eccentricity, axial tilt, and precession
    2. BChanges in the solar luminosity (i.e., brightness)
    3. CDust belt in the galaxy that reduces solar radiation from reaching Earth
    4. DChanges in the North Atlantic Deep Water formation
  5. 5Which of the following is true about the North Atlantic Deep Water (NADW) and its formation?
    1. AOn their way north to near Greenland, the warm and salty subtropical waters of the North Atlantic lose heat to the overlying atmosphere and become dense
    2. BThe Atlantic Ocean is fresher (less salty) than the other oceans
    3. CKatabatic winds promote sea ice formation, which increases seawater salinity and thus density
    4. DNADW is the densest water in the world ocean
  6. 6Temperature (T) and salinity (S) are central to oceanography. Which of the following is false?
    1. AT and S directly give us seawater pressure
    2. BT and S help us identify different water masses
    3. CT and S directly give us seawater density
    4. DWe can measure T and S
    5. ENone of the above
  7. 7Which is true about upwelling?
    1. AUpwelling brings warm waters from the interior of the ocean to the surface
    2. BTrade winds cause equatorial upwelling
    3. CUpwelling suppresses phytoplankton growth
    4. DNone of the above
  8. 8The geologic evidence for the repeated glacial-interglacial cycle is the variation in oxygen isotope composition of seawater. As continental ice grows, the oxygen isotope composition of seawater becomes progressively enriched in the heavier oxygen-18 isotope.
    1. ATrue
    2. BFalse
  9. 9Which is false about subtropical gyres?
    1. AGyres are found in both hemispheres
    2. BWesterly winds and the Trade winds pile up waters in the subtropics
    3. CCurrents on the western side of the gyres are weaker than currents elsewhere
    4. DThere is a balance of forces between Coriolis force and pressure gradient force

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Quiz on Week Six Oceanography, created by Paige Kraemer on 18/12/2015.
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