Test
Week Six Oceanography
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Preguntas del test (9)
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.
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2Which of the following is true about the Antarctic Bottom Water and its formation?
- AIt is the densest water in the world ocean
- BSea ice formation increases the density of the surrounding water, because ice formation rejects salt
- CIt forms only around Antarctica
- DKatabatic winds promote sea ice formation
- EAll of the above
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.
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4The Milankovitch theory of glacial-interglacial cycle consists of:
- AChanges in Earth orbit around the Sun: eccentricity, axial tilt, and precession
- BChanges in the solar luminosity (i.e., brightness)
- CDust belt in the galaxy that reduces solar radiation from reaching Earth
- DChanges in the North Atlantic Deep Water formation
5Which of the following is true about the North Atlantic Deep Water (NADW) and its formation?
- 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
- BThe Atlantic Ocean is fresher (less salty) than the other oceans
- CKatabatic winds promote sea ice formation, which increases seawater salinity and thus density
- DNADW is the densest water in the world ocean
6Temperature (T) and salinity (S) are central to oceanography. Which of the following is false?
- AT and S directly give us seawater pressure
- BT and S help us identify different water masses
- CT and S directly give us seawater density
- DWe can measure T and S
- ENone of the above
7Which is true about upwelling?
- AUpwelling brings warm waters from the interior of the ocean to the surface
- BTrade winds cause equatorial upwelling
- CUpwelling suppresses phytoplankton growth
- DNone of the above
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.
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9Which is false about subtropical gyres?
- AGyres are found in both hemispheres
- BWesterly winds and the Trade winds pile up waters in the subtropics
- CCurrents on the western side of the gyres are weaker than currents elsewhere
- DThere is a balance of forces between Coriolis force and pressure gradient force
Información
- Descripción
- Test sobre Week Six Oceanography, creado por Paige Kraemer el 18/12/2015.
- Autor
- Paige Kraemer
- Idioma
- English
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