Question 1

Which of the following is not correct concerning a cold front?

Accepted Answer

A)   It marks the position of a trough of low pressure.
B)   It marks a zone of shifting winds.
C)   It is colored purple on a weather map.
D)   It has cold air behind it.E) B) and C)
F) A) and D)

Question 2

Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because

Accepted Answer

A)   the water is colder along the Pacific coast.
B)   the prevailing winds aloft are westerly.
C)   the source region for mP air on the Atlantic coast is western Europe.
D)   the water is warmer along the Atlantic coast.
E)   the land is colder along the Atlantic coast.F) A) and E)
G) C) and D)

Question 3

When comparing an "average" cold front to an "average" warm front,which of the following is not correct?

Accepted Answer

A)   Generally,cold fronts move faster than warm fronts.
B)   Generally,cold fronts have steeper slopes.
C)   Generally,precipitation covers a much broader area with a cold front.
D)   Especially in winter,cumuliform clouds are more often associated with cold fronts.E) B) and C)
F) None of the above

Question 4

How do upper-air fronts form?

Accepted Answer

The answer of How do upper-air fronts form?...

Question 5

Describe some of the changes in weather conditions (winds,temperature,clouds,precipitation,pressure changes)you would expect to observe as a warm front approaches and passes through your location.

Accepted Answer

As a warm front approaches and passes th...

Question 6

The origin of cP and cA air masses that enter the United States is

Accepted Answer

A)   Northern Siberia.
B)   Northern Atlantic Ocean.
C)   Antarctica.
D)   Northern Canada and Alaska.E) C) and D)
F) B) and D)

Question 7

The word "frontogenesis" on a weather map would mean that

Accepted Answer

A)   a front is in the process of dissipating.
B)   one front is about to overtake another front.
C)   a front is regenerating or strengthening.
D)   severe thunderstorms will form along a front.E) C) and D)
F) None of the above

Question 8

Explain why the observation of a halo around the moon or sun could forewarn of the arrival of a warm front.

Accepted Answer

The observation of a halo around the moo...

Question 9

One would expect a cP air mass to be

Accepted Answer

A)   cold and dry.
B)   cold and moist.
C)   warm and dry.
D)   warm and moist.E) A) and B)
F) B) and D)

Question 10

What type of weather front would be responsible for the following weather forecast? "Increasing cloudiness and warm today with the possibility of showers by this evening.Turning much colder tonight.Winds southwesterly becoming gusty and shifting to northwesterly by tonight."

Accepted Answer

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

Question 11

The only indication on the station model of past weather conditions is the

Accepted Answer

A)   temperature.
B)   dew point.
C)   cloud cover.
D)   wind direction.
E)   pressure tendency.F) A) and C)
G) A) and B)

Question 12

On a weather map,the transition zone between two air masses with sharply contrasting properties is marked by

Accepted Answer

A)   the letter "H."
B)   the words "air mass weather."
C)   a front.
D)   the letter "L."E) None of the above
F) A) and D)

Question 13

Lake-effect snows are best developed around the Great Lakes during

Accepted Answer

A)   early spring when moist,tropical air moves over the frozen lakes.
B)   late fall and early winter when cold,dry polar air moves over the relatively warm water.
C)   late fall and early winter when moist,polar air sweeps in from the east.
D)   middle winter when the unseasonably warm air mass moves over the cold water.E) B) and C)
F) All of the above

Question 14

Before the passage of a cold front the pressure normally ____,and after the passage of a cold front the pressure normally ____.

Accepted Answer

A)   drops,drops
B)   drops,rises
C)   rises,rises
D)   rises,dropsE) B) and D)
F) A) and B)

Question 15

What type of air mass would be responsible for refreshing cool,dry breezes after a long summer hot spell in the Central Plains?

Accepted Answer

A)   mP
B)   mT
C)   cP
D)   cTE) None of the above
F) A) and C)

Question 16

At a warm front,the warm air

Accepted Answer

A)   rises and cools.
B)   rises and warms.
C)   sinks and cools.
D)   sinks and warms.E) All of the above
F) A) and B)

Question 17

Draw side views of a typical warm and cold front.Clearly indicate the temperatures of the separate air masses and show their directions of motion.What types of clouds would you expect to find and where? Where would you expect precipitation to occur?

Accepted Answer

For a typical warm front, the warm air ...

Question 18

Clear sunny days with very cold nights would be associated with what type of air mass?

Accepted Answer

A)   mP
B)   mT
C)   cP
D)   cTE) B) and D)
F) A) and C)

Question 19

The air mass with the highest actual water vapor content is

Accepted Answer

A)   mT.
B)   cT.
C)   mP.
D)   cP.E) A) and B)
F) A) and C)

Question 20

The lake effect occurs when ____ air mass moves over a ____ body of water.

Accepted Answer

A)   an mT,cold
B)   an mT,warm
C)   a cP,cold
D)   a cP,warmE) All of the above
F) A) and B)

Exam 11: Air Masses and Fronts

Explain why the observation of a halo around the moon or sun could forewarn of the arrival of a warm front.

Correct AnswerAnswered by ExamLex AIThe observation of a halo around the moo...View AnswerShow Answer

One would expect a cP air mass to be

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The lake effect occurs when ____ air mass moves over a ____ body of water.

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Describe some of the changes in weather conditions (winds,temperature,clouds,precipitation,pressure changes)you would expect to observe as a warm front approaches and passes through your location.

Correct AnswerAnswered by ExamLex AIAs a warm front approaches and passes th...View AnswerShow Answer

At a warm front,the warm air

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Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because

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The word "frontogenesis" on a weather map would mean that

Correct AnswerverifiedShow Answer

How do upper-air fronts form?

Correct AnswerverifiedShow Answer

Clear sunny days with very cold nights would be associated with what type of air mass?

Correct AnswerverifiedShow Answer

Which of the following is not correct concerning a cold front?

Correct AnswerverifiedShow Answer

What type of weather front would be responsible for the following weather forecast? "Increasing cloudiness and warm today with the possibility of showers by this evening.Turning much colder tonight.Winds southwesterly becoming gusty and shifting to northwesterly by tonight."

Correct AnswerverifiedShow Answer

On a weather map,the transition zone between two air masses with sharply contrasting properties is marked by

Correct AnswerverifiedShow Answer

The air mass with the highest actual water vapor content is

Correct AnswerverifiedShow Answer

When comparing an "average" cold front to an "average" warm front,which of the following is not correct?

Correct AnswerverifiedShow Answer

What type of air mass would be responsible for refreshing cool,dry breezes after a long summer hot spell in the Central Plains?

Correct AnswerverifiedShow Answer

Draw side views of a typical warm and cold front.Clearly indicate the temperatures of the separate air masses and show their directions of motion.What types of clouds would you expect to find and where? Where would you expect precipitation to occur?

Correct AnswerAnswered by ExamLex AIFor a typical warm front, the warm air ...View AnswerShow Answer

The only indication on the station model of past weather conditions is the

Correct AnswerverifiedShow Answer

Before the passage of a cold front the pressure normally ____,and after the passage of a cold front the pressure normally ____.

Correct AnswerverifiedShow Answer

The origin of cP and cA air masses that enter the United States is

Correct AnswerverifiedShow Answer

Lake-effect snows are best developed around the Great Lakes during

Correct AnswerverifiedShow Answer

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The observation of a halo around the moo...
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The lake effect occurs when air mass moves over a body of water.

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As a warm front approaches and passes th...
View Answer

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Correct Answer
Answered by ExamLex AI

For a typical warm front, the warm air ...
View Answer

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Before the passage of a cold front the pressure normally ,and after the passage of a cold front the pressure normally .

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Correct Answer
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