Question 1

Warm fronts

Accepted Answer

A)  frequently produce cumuliform clouds.
B)  are the most common source of tornadoes.
C)  typically provide longer periods of precipitation than do cold fronts.
D)  typically move faster than do cold fronts.E) B) and D)
F) All of the above

Question 2

mT air masses

Accepted Answer

A)  typically develop over moderately cool waters.
B)  are stable at their surfaces.
C)  do not affect the southwestern United States.
D)  often spawn thunderstorms.E) All of the above
F) A) and B)

Question 3

The temperature,pressure and moisture characteristics of the atmosphere arise mostly from

Accepted Answer

A)  the daytime exchange of energy and water vapor between the air and the surface.
B)  the nighttime exchange of energy and water vapor between the air and the surface.
C)  the continuous exchange of energy and water vapor between the air and the surface.D) None of the above
E) All of the above

Question 4

________ fronts usually have showery precipitation while ________ fronts usually have continuous precipitation.

Accepted Answer

A)  Cold; warm
B)  Warm; cold
C)  Occluded; cold
D)  Occluded; squall linesE) A) and D)
F) B) and C)

Question 5

Which of the following fronts do not separate tropical from polar air masses?

Accepted Answer

A)  cold
B)  warm
C)  stationary
D)  occludedE) B) and D)
F) B) and C)

Question 6

As cP air moves south from Canada to near the Gulf of Mexico,the largest drop in temperature will occur at

Accepted Answer

A)  the U.S.-Canadian border.
B)  Minneapolis.
C)  Saint Louis.
D)  Birmingham.E) A) and C)
F) B) and C)

Question 7

This type of front has a mass of warm air cut off from the surface.

Accepted Answer

A)  warm front
B)  cold front
C)  stationary front
D)  occluded frontE) None of the above
F) A) and B)

Question 8

Heating or cooling of large bodies of air requires many days because

Accepted Answer

A)  energy transfer is not an instantaneous process.
B)  energy transfer is an instantaneous process.
C)  the process takes place only during nighttime.
D)  the process takes place only during daytime.E) All of the above
F) C) and D)

Question 9

Why aren't air masses classified based on their pressure characteristics?

Accepted Answer

A)  because sea-level pressure is fairly uniform across the globe
B)  because temperature is fairly uniform across the globe
C)  because moisture is fairly uniform across the globe
D)  because both temperature and moisture are fairly uniform across the globeE) C) and D)
F) A) and C)

Question 10

A "dryline"

Accepted Answer

A)  is colored blue on a weather map.
B)  frequently triggers severe storms.
C)  is seldom found in the United States great plains.
D)  means that there is little moisture present in the atmosphere.E) A) and D)
F) All of the above

Question 11

Why is mountainous terrain a poor source region for air masses?

Accepted Answer

Mountainous regions ...

Question 12

Meteorologists have grouped air masses into this number of major categories.

Accepted Answer

A)  three
B)  four
C)  five
D)  sixE) A) and B)
F) A) and D)

Question 13

The frontal system with the steepest lapse rate is

Accepted Answer

A)  warm front.
B)  cold front.
C)  arctic front.
D)  occluded front.E) C) and D)
F) B) and C)

Question 14

Most of the air masses in the central part of the United States are either

Accepted Answer

A)  maritime polar or continental polar.
B)  maritime polar or maritime tropical.
C)  continental polar or maritime tropical.
D)  continental tropical and maritime polar.E) B) and C)
F) All of the above

Question 15

Air masses are

Accepted Answer

A)  large bodies of air with fairly uniform temperature and moisture characteristics.
B)  large bodies of air with the same mass.
C)  large bodies of air with fairly uniform pressure characteristics.
D)  large bodies of air with fairly uniform wind characteristics.E) A) and B)
F) All of the above

Question 16

List the sources of maritime air masses that affect North America.

Accepted Answer

Maritime polar air forms over the North ...

Question 17

Would you expect to find a cA air mass in the Southern Hemisphere? Explain.

Accepted Answer

Yes,because Antarcti...

Question 18

Between a cold front and a warm front,we find

Accepted Answer

A)  a cold air mass.
B)  a dry air mass.
C)  a warm, moist, and unstable air mass.
D)  a very stable air mass.E) A) and D)
F) None of the above

Question 19

Maritime polar air masses are similar to these types of air masses,except they are more moderate in both temperature and dryness.

Accepted Answer

A)  mT
B)  cP
C)  cT
D)  none of theseE) None of the above
F) A) and D)

Question 20

This is the first type of cloud formed when a warm front starts to overrun cold air

Accepted Answer

A)  cirrus.
B)  low-level stratus.
C)  altostratus.
D)  cumulonimbus.E) C) and D)
F) B) and D)

Exam 9: Air Masses and Fronts

The frontal system with the steepest lapse rate is

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Meteorologists have grouped air masses into this number of major categories.

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As cP air moves south from Canada to near the Gulf of Mexico,the largest drop in temperature will occur at

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Air masses are

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Most of the air masses in the central part of the United States are either

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Why aren't air masses classified based on their pressure characteristics?

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Would you expect to find a cA air mass in the Southern Hemisphere? Explain.

Correct AnswerverifiedYes,because Antarcti...View AnswerShow Answer

Which of the following fronts do not separate tropical from polar air masses?

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This is the first type of cloud formed when a warm front starts to overrun cold air

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Warm fronts

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Maritime polar air masses are similar to these types of air masses,except they are more moderate in both temperature and dryness.

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The temperature,pressure and moisture characteristics of the atmosphere arise mostly from

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________ fronts usually have showery precipitation while ________ fronts usually have continuous precipitation.

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A "dryline"

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mT air masses

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Why is mountainous terrain a poor source region for air masses?

Correct AnswerverifiedMountainous regions ...View AnswerShow Answer

Between a cold front and a warm front,we find

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List the sources of maritime air masses that affect North America.

Correct AnswerverifiedMaritime polar air forms over the North ...View AnswerShow Answer

This type of front has a mass of warm air cut off from the surface.

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Heating or cooling of large bodies of air requires many days because

Correct AnswerverifiedShow Answer

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Yes,because Antarcti...
View Answer

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fronts usually have showery precipitation while fronts usually have continuous precipitation.

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Mountainous regions ...
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Maritime polar air forms over the North ...
View Answer

Correct Answer
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Correct Answer
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