Question 1

A nor'easter typically occurs when:

Accepted Answer

A)  NE winds associated with a low-pressure system draw mP air into the northeastern United States.
B)  the polar jet stream weakens and allows mP air to invade New England.
C)  the NE tradewinds strengthen in the Pacific during a La Niña event.
D)  a cP air mass from the northeast moves into Texas.

Question 2

Maritime air masses have a higher water vapor content than continental air masses.

Accepted Answer

A) True 
 B)False

Question 3

The stability of an air mass can be affected by:

Accepted Answer

A)  cyclones.
B)  mountain ranges.
C)  anticyclones.
D)  mountain ranges,cyclones,and anticyclones.

Question 4

cT air masses are hot and dry.

Accepted Answer

A) True 
 B)False

Question 5

Most mP air masses that influence the U.S.originate over:

Accepted Answer

A)  the north Atlantic.
B)  the Gulf of Mexico.
C)  the north Pacific.
D)  the Arctic Ocean.

Question 6

A warm,moist air mass from the Gulf of Mexico that moves over the land in the southeastern U.S.during the summer is likely to be classified as:

Accepted Answer

A)  mTk
B)  mTw
C)  mEk
D)  mWk

Question 7

Which of the following is not a good source region for air masses?

Accepted Answer

A)  the Gulf of Mexico
B)  central Canada
C)  the North Pacific
D)  the central United States

Question 8

An air mass from the Gulf of Mexico is called:

Accepted Answer

A)  mP.
B)  cT.
C)  mT.
D)  cP.

Question 9

Which air mass is unstable in the winter but stable in the summer?

Accepted Answer

A)  cP
B)  mT
C)  mP
D)  cT

Question 10

An air mass with the designation k is likely to become more unstable.

Accepted Answer

A) True 
 B)False

Question 11

Name three processes by which an air mass can be modified.

Accepted Answer

Heating from below,c...

Question 12

While on vacation in Florida,you experience several days of weather with maximum temperatures of 90°F and dew points above 65°F.What educated guess could you make about the weather?

Accepted Answer

A)  It is caused by an mP air mass.
B)  It is caused by a cT air mass.
C)  It is caused by an mT air mass.
D)  It is not air mass weather.

Question 13

When an area is experiencing several consecutive days of rather constant weather,it is experiencing:

Accepted Answer

A)  warm-front weather.
B)  air-mass weather.
C)  occluded front weather.
D)  cold-front weather.

Question 14

Name the three air mass types most important for the continental U.S.

Accepted Answer

Maritime polar (mP),...

Question 15

Where do cA air-masses originate?

Accepted Answer

A)  Arctic basin and Greenland ice cap
B)  Interior Canada and Alaska
C)  Northwestern Atlantic
D)  Patagonia

Question 16

Why are cT air masses of minor importance for the U.S.?

Accepted Answer

A)  No large source region is near the U.S.
B)  Prevailing winds steer them away.
C)  Mountains block their approach.
D)  Upper level subsidence limits their formation.

Question 17

The ________ air mass often originates as a different air mass in Siberia and is subsequently altered.

Accepted Answer

A)  mP
B)  mT
C)  cP
D)  cT

Question 18

The area where an air mass originates is called a:

Accepted Answer

A)  source region.
B)  site region.
C)  local region.
D)  large region.

Question 19

Maritime air masses form over landmasses.

Accepted Answer

A) True 
 B)False

Question 20

An ideal source region of air masses should be:

Accepted Answer

A)  roughly half land,half water.
B)  located at or near the equator.
C)  physically uniform.
D)  small.
E)  located at or near a pole.

Exam 8: Air Masses

A warm,moist air mass from the Gulf of Mexico that moves over the land in the southeastern U.S.during the summer is likely to be classified as:

Correct AnswerverifiedShow Answer

Which of the following is not a good source region for air masses?

Correct AnswerverifiedShow Answer

Most mP air masses that influence the U.S.originate over:

Correct AnswerverifiedShow Answer

Which air mass is unstable in the winter but stable in the summer?

Correct AnswerverifiedShow Answer

Maritime air masses form over landmasses.

Correct AnswerverifiedShow Answer

An air mass with the designation k is likely to become more unstable.

Correct AnswerverifiedShow Answer

The ________ air mass often originates as a different air mass in Siberia and is subsequently altered.

Correct AnswerverifiedShow Answer

An air mass from the Gulf of Mexico is called:

Correct AnswerverifiedShow Answer

The stability of an air mass can be affected by:

Correct AnswerverifiedShow Answer

Maritime air masses have a higher water vapor content than continental air masses.

Correct AnswerverifiedShow Answer

Where do cA air-masses originate?

Correct AnswerverifiedShow Answer

cT air masses are hot and dry.

Correct AnswerverifiedShow Answer

An ideal source region of air masses should be:

Correct AnswerverifiedShow Answer

When an area is experiencing several consecutive days of rather constant weather,it is experiencing:

Correct AnswerverifiedShow Answer

Why are cT air masses of minor importance for the U.S.?

Correct AnswerverifiedShow Answer

A nor'easter typically occurs when:

Correct AnswerverifiedShow Answer

Name three processes by which an air mass can be modified.

Correct AnswerverifiedHeating from below,c...View AnswerShow Answer

Name the three air mass types most important for the continental U.S.

Correct AnswerverifiedMaritime polar (mP),...View AnswerShow Answer

The area where an air mass originates is called a:

Correct AnswerverifiedShow Answer

While on vacation in Florida,you experience several days of weather with maximum temperatures of 90°F and dew points above 65°F.What educated guess could you make about the weather?

Correct AnswerverifiedShow Answer

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Heating from below,c...
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Maritime polar (mP),...
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