Exam 9: Weather Patterns

Which of the following air masses is most likely to be the cold air in the diagram above?

Which of the following best represents the wind direction at point H?

A trough aloft is generally associated with:

Which of these best describes the reason most high pressure systems bring clear skies?

When surface cyclones form,they almost invariably occur just ahead of an upper air ridge.

The energy of a mid-latitude cyclone comes mainly from:

Line A-B represents:

Cyclones pass over Oregon more often in winter than in summer.

A wind shift in a counterclockwise direction,as from east to north,is termed ________ wind shift.

What type of occluded front is most common along the Pacific Coast?

Cyclones usually move fastest in summer.

A warm front is said to exist when:

What feature of the upper-level wind pattern must exist for the origin and development of a surface low?

The development of major winter storms in the midwest depends strongly on:

Surface low-pressure systems usually develop in conjunction with a ridge aloft.

The lifting of air and the resulting formation of clouds and rain is more gentle (gradual)for a:

Much less study has been devoted to anticyclones as compared to cyclones.

A midlatitude cyclone forms in western Canada,and very rapidly moves through the Dakotas and passes over the Great Lakes region,bringing very cold temperatures with it.This storm would probably be called a(an):

Cold fronts are steeper than warm fronts.

When speed divergence occurs in the upper atmosphere,what effect does it have on cyclogenesis?