Question 1

The Enhanced Fujita Scale was adopted in 2007. It is based on estimates of 3-second gusts of wind as estimated by ________.

Accepted Answer

A)   anemometers
B)   tornado damage
C)   Doppler radar
D)   human survivors
E)   weather balloonsF) A) and D)
G) B) and C)

Question 2

Air masses labeled "polar" tend to be unstable.

Accepted Answer

A) True 
 B)False

Question 3

Hurricane formation is rare within ________ degrees of the Equator.

Accepted Answer

A)   10
B)   25
C)   50
D)   75
E)   180F) B) and E)
G) None of the above

Question 4

A midlatitude anticyclone ________.

Accepted Answer

A)   is more than one air mass
B)   exhibits instability
C)   has a front in its center
D)   is associated with fast winds
E)   is associated with sunny, dry weatherF) B) and C)
G) A) and C)

Question 5

Maritime Tropical air is a common air mass affecting the eastern United States.

Accepted Answer

A) True 
 B)False

Question 6

More than 80% of hurricanes originate on the poleward side of the ________.

Accepted Answer

A)   polar front
B)   intertropical convergence zone
C)   surface westerlies
D)   Rossby waves
E)   subtropical highsF) A) and B)
G) A) and C)

Question 7

The month most likely for a hurricane to occur in the Northern Hemisphere is ________.

Accepted Answer

A)   June
B)   January
C)   April
D)   September
E)   DecemberF) B) and E)
G) B) and D)

Question 8

Almost any area in the high or low latitudes can act as an air mass source region.

Accepted Answer

A) True 
 B)False

Question 9

The slope of a warm front averages 1:200.

Accepted Answer

A) True 
 B)False

Question 10

The boundary between warm air and cold air is much steeper in a warm front than in a cold front.

Accepted Answer

A) True 
 B)False

Question 11

It can be said that along all the fronts in a middle latitude cyclone, ________.

Accepted Answer

A)   cold air sinks
B)   air rises
C)   precipitation is unlikely
D)   the pressure is high
E)   heavy rain occursF) A) and B)
G) A) and C)

Question 12

Tornadoes contain extreme pressure gradients. They are thought to be on the order of ________ millibars from the outside to the inside of the storm.

Accepted Answer

A)   10
B)   100
C)   1,000
D)   10,000
E)   100,000F) A) and E)
G) None of the above

Question 13

The warmest air can be found in the ________ air mass.

Accepted Answer

A)   cP
B)   mP
C)   mT
D)   cT
E)   EF) B) and C)
G) B) and D)

Question 14

As a middle latitude cyclone goes through its life cycle, the warm sector ________.

Accepted Answer

A)   gets larger
B)   gets smaller
C)   travels from east to west
D)   subsides
E)   becomes warmerF) C) and E)
G) D) and E)

Question 15

Katrina was the ________ hurricane ever to hit the United States.

Accepted Answer

A)   strongest
B)   least well forecasted
C)   largest diameter
D)   most costly
E)   most deadlyF) All of the above
G) A) and D)

Question 16

Easterly waves occasionally intensify into hurricanes.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following rarely affects North America?

Accepted Answer

A)   continental tropical
B)   maritime tropical
C)   Arctic
D)   continental polar
E)   equatorialF) B) and E)
G) C) and D)

Question 18

In hurricanes, surface winds converge towards the center while winds aloft diverge away from the center.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following air masses can be identified as being "very stable"?

Accepted Answer

A)   Arctic
B)   Equatorial
C)   Maritime tropical
D)   Maritime polar
E)   Rocky MountainF) All of the above
G) C) and D)

Question 20

Which of the following is NOT NECESSARILY a property of an air mass?

Accepted Answer

A)   It must be large.
B)   It must have relatively uniform properties within itself.
C)   It must have a warm front at its leading edge.
D)   It must travel as a recognizable entity.
E)   It must modify as it leaves its source region.F) A) and E)
G) A) and C)

Exam 7: Atmospheric Disturbances

As a middle latitude cyclone goes through its life cycle, the warm sector ________.

Correct AnswerverifiedShow Answer

Maritime Tropical air is a common air mass affecting the eastern United States.

Correct AnswerverifiedShow Answer

Which of the following is NOT NECESSARILY a property of an air mass?

Correct AnswerverifiedShow Answer

The boundary between warm air and cold air is much steeper in a warm front than in a cold front.

Correct AnswerverifiedShow Answer

Air masses labeled "polar" tend to be unstable.

Correct AnswerverifiedShow Answer

Easterly waves occasionally intensify into hurricanes.

Correct AnswerverifiedShow Answer

The slope of a warm front averages 1:200.

Correct AnswerverifiedShow Answer

In hurricanes, surface winds converge towards the center while winds aloft diverge away from the center.

Correct AnswerverifiedShow Answer

Which of the following rarely affects North America?

Correct AnswerverifiedShow Answer

The Enhanced Fujita Scale was adopted in 2007. It is based on estimates of 3-second gusts of wind as estimated by ________.

Correct AnswerverifiedShow Answer

Which of the following air masses can be identified as being "very stable"?

Correct AnswerverifiedShow Answer

Tornadoes contain extreme pressure gradients. They are thought to be on the order of ________ millibars from the outside to the inside of the storm.

Correct AnswerverifiedShow Answer

Hurricane formation is rare within ________ degrees of the Equator.

Correct AnswerverifiedShow Answer

Katrina was the ________ hurricane ever to hit the United States.

Correct AnswerverifiedShow Answer

The warmest air can be found in the ________ air mass.

Correct AnswerverifiedShow Answer

A midlatitude anticyclone ________.

Correct AnswerverifiedShow Answer

Almost any area in the high or low latitudes can act as an air mass source region.

Correct AnswerverifiedShow Answer

It can be said that along all the fronts in a middle latitude cyclone, ________.

Correct AnswerverifiedShow Answer

More than 80% of hurricanes originate on the poleward side of the ________.

Correct AnswerverifiedShow Answer

The month most likely for a hurricane to occur in the Northern Hemisphere is ________.

Correct AnswerverifiedShow Answer

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