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Exam 9: Weather Patterns

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Question 31

Multiple Choice

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Surface cyclones move at a speed that is:

A) one- quarter to one- half the speed of the winds at the 500- mb pressure level.
B) five times greater than the speed of a cold front.
C) a product of the surface pressure gradient force.
D) determined by the jet stream.

E) None of the above
F) A) and D)

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Question 32

Multiple Choice

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The arrival of a cold front brings:

A) higher temperatures.
B) cumulonimbus clouds.
C) mild weather.
D) stationary winds.
E) gentle rains.

F) All of the above
G) A) and B)

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Question 33

Multiple Choice

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Compared to other types of fronts, the weather associated with a cold front usually:

Explain why divergence in the flow aloft is a necessary condition for the development and intensification of a midlatitude cyclone.

Each of the statements refers to the approach or to the passage of a front. If the statement refers to the approach of a typical cold front, use the letter A for your answer. If the statement refers to the approach or passage of a typical warm front, use the letter B. If the statement applies to both, answer with letter C. -An "invading" cP air mass

Freezing rain and/or sleet occur most often with a cold front.

Middle- latitude cyclones quickly die out once all the warm air has been lifted aloft.

Downstream from a ridge aloft, the wind direction is northwest.

What type of occluded front is most common along the west coasts of continents?

The type of front shown in the diagram above is:

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) :

-The type of weather most frequently associated with the front shown on the diagram above is:

The process best illustrated in the diagram of a front above is:

Each of the statements refers to the approach or to the passage of a front. If the statement refers to the approach of a typical cold front, use the letter A for your answer. If the statement refers to the approach or passage of a typical warm front, use the letter B. If the statement applies to both, answer with letter C. -Cirrostratus clouds followed by altostratus

Severe weather, including tornadoes, is most often associated with a ______front.

A low- flying aircraft heading from point J to point H would most likely experience which of the following changes in wind direction?

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

Cold fronts are steeper than warm fronts.

-Line A- B represents:

The more violent nature of weather produced by a cold front can be attributed to which two factors?