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Exam 8: Air Pressure and Winds

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Question 31

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The Coriolis force deflects winds to the ____________________ in the Northern Hemisphere and to the ____________________ in the Southern Hemisphere.​

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Question 32

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A surface low pressure center is generally associated with ____ on an upper level isobaric chart.​

A) a trough
B) a ridge
C) ​zonal flow
D) ​convergence
E) ​divergence

F) B) and D)
G) B) and C)

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Question 33

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If Earth were not rotating,how would the path of a satellite traveling from north to south around Earth be observed from the surface.

The magnitude of the Coriolis force varies with ____ and ____.​

Surface winds that blow over the ocean are closer to being geostrophic than those that blow over land.

On an isobaric weather chart,the spacing of the height contours indicates the magnitude of the pressure gradient force.

The angle at which surface winds cross isobars is to a large degree dependent on the roughness of the terrain.

To correctly monitor horizontal changes in air pressure,the most important correction for a mercury barometer is the correction for​

Warming and cooling of air creates density oscillations known as ____________________ that show up as small pressure changes near Earth's surface.

Suppose you deflate a bicycle tire by depressing the air valve.Why does air rush out of the tire? After the air stops rushing out of the tire,is the tire empty? Explain your answer.

What do Newton's first and second laws of motion tell us?

Surface winds blow across isobars at an angle and the pressure gradient force is balanced by the ____ force and the Coriolis force.​

Winds blow slightly inward​

Explain briefly why upper-level winds at middle latitudes in the Northern Hemisphere blow from west to east.In what direction do upper level winds at middle latitudes in the Southern Hemisphere blow?

If you live in the Northern Hemisphere and a region of surface low pressure is directly west of you,the surface wind direction at your home would probably be either ____________________ or _____________________.

The pressure gradient force has a direct effect on horizontal wind movements.

The vertical pressure gradient force is directed ____________________.

On an upper-level chart,normally we find warm air associated with ____________________ pressure,and cold air associated with ____________________ pressure.​

If Earth did not rotate,the wind would blow directly from regions of ____________________ pressure toward regions of ____________________ pressure.

Which pressure unit is most commonly used in aviation?​