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35 Cards in this Set
- Front
- Back
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A counterclockwise atmospheric circulation in the Northern Hemisphere is known as a/an ________.
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Cyclone
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Geostrophic wind always flows ________.
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parallel to the isobars
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The doldrums are most closely associated with ________.
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ITCZ
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Air in an anticyclone always flows ________ in the Northern Hemisphere.
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clockwise
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________ and ________ both occur at night.
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Mountain breezes, land breezes
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Katabatic winds are those which ________.
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flow down narrow valleys
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As a general rule, friction is greatest ________.
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near Earth's surface
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Rossby waves are
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large undulations in the upper air westerlies.
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Surface winds tend to be ________ those at a higher level.
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slower than
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The polar front jet stream is
a) found above the polar front b) found above the boundary of warm and cold air c) usually to the north of the core of the upper d) not continuous around the Earth. |
all of the above
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The so-called "winds of commerce" are the ________ winds.
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trade
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Sinking air that diverges when it reaches Earth's surface is closely associated with ________.
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anticyclones
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Above the influence of friction, most winds follow a ________ course.
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geostrophic
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City A has an air pressure of 1,000 millibars. City B has an air pressure of 1004 millibars. The distance between the two cities is 100 kilometers. The difference of 4 millibars over 100 kilometers is known as
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the pressure gradient.
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The city of Chicago has a latitude (42°N) within which part of the global circulation?
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westerlies
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You are standing on a shoreline with the ocean to your west. The wind is traveling from west to east. The wind would be called
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onshore.
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Which of the following does NOT act upon winds that blow far above the surface of the Earth?
a) Coriolis b) geostrophic c) gravity d) pressure gradient e) friction |
friction
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Coriolis effect exists because
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the Earth rotates.
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In which situation would Coriolis effect be GREATEST?
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high wind speeds, high latitude
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In a surface cyclone in the Southern Hemisphere, winds spiral
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clockwise and inward.
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The polar front jet stream can be found
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at the boundary between warm and cold air.
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Cyclones, in the Northern Hemisphere, are ________ air flows.
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counterclockwise
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The polar front and subtropical jet streams are both high-altitude flows which circulate ________.
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from west to east
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When surface cold air pushes far equatorward and warm air pushes far poleward ________.
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the Rossby waves have great amplitude
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Which of the following occurs closest to the Equator?
a) polar front b) subpolar low c) westerlies d) doldrums e) subtropical high |
doldrums
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From the video Arctic Blues, what percentage of the Earth surface is covered by snow and ice?
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15%
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From the video Arctic Blues, the US had ________ of this _______________ in the 1910’s today it has less than 30
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150 glaciers
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From the video Arctic Blues, which two of the following creatures are affected by changes in the Arctic?
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Reindeer and Polar Bears
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From the video Arctic Blues, the average temperature of the Arctic has increased by almost
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Twice
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The basic unit of pressure mapped on weather maps is ________.
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millibars
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Trade winds are found ________.
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between 25° north and south of the Equator
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Wind speed may be roughly indicated by ________.
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spacing of isobars on a weather map
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The "horse latitudes" are zones of minimal winds which are associated with the ________ system.
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subtropical high pressure
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The jet stream of the midlatitudes can usually be found at elevations ranging from ________ kilometers.
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9 to 12
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The contact zone of warm tropical and cold polar air is known as the
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polar front.
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