Question 1

At a given pressure value, the air density will be highest when the temperature is coldest.

Accepted Answer

A) True 
 B)False

Question 2

Standard sea level atmospheric pressure in the U.S. is approximately 29.92 inches of mercury.

Accepted Answer

A) True 
 B)False

Question 3

What is the average sea level pressure in the United States?

Accepted Answer

A)   1000.13 mb
B)   766.00 mb
C)   1013.25 mb
D)   29.92 mbE) None of the above
F) B) and D)

Question 4

Anticyclonic flow is:

Accepted Answer

A)   associated with air converging at the surface.
B)   associated with low pressure.
C)   in the opposite direction of Earth's rotation.
D)   associated with storms and rainy conditions.E) None of the above
F) A) and D)

Question 5

The Coriolis effect is important only for motions that:

Accepted Answer

A)   cover short distances.
B)   do not involve a pressure gradient.
C)   are near the earth's surface.
D)   are slow.
E)   cover long distances.F) B) and C)
G) B) and E)

Question 6

The effect of friction on the wind directly and/or indirectly alters its:

Accepted Answer

A)   heat content.
B)   speed and direction.
C)   density.
D)   viscosity.
E)   speed only.F) All of the above
G) A) and B)

Question 7

The addition of water vapor will cause the density of air to:

Accepted Answer

A)   increase.
B)   vary widely in a horizontal direction.
C)   stay the same.
D)   decrease.E) B) and D)
F) All of the above

Question 8

The main cause of the sea breeze is the unequal heating of land and water.

Accepted Answer

A) True 
 B)False

Question 9

The primary cause of wind is not atmospheric pressure but atmospheric pressure differences.

Accepted Answer

A) True 
 B)False

Question 10

High air pressure zones are usually associated with:

Accepted Answer

A)   relatively dry conditions.
B)   stormy weather.
C)   ascending currents.
D)   converging winds.E) None of the above
F) B) and C)

Question 11

In the southern hemisphere, anticyclonic winds flow:

Accepted Answer

A)   inward and clockwise.
B)   outward and clockwise.
C)   outward and counterclockwise.
D)   inward and counterclockwise.E) B) and C)
F) A) and C)

Question 12

The force that generates wind is:

Accepted Answer

A)   centrifugal force.
B)   friction.
C)   pressure gradient force.
D)   gravity.
E)   Coriolis force.F) D) and E)
G) B) and D)

Question 13

Why do surface winds cross the isobars at an angle toward lower pressure (instead of blowing parallel to the isobars) ?

Accepted Answer

A)   Friction reduces the speed so Coriolis is weakened.
B)   It results from divergence in the surface wind.
C)   Pressure gradient becomes stronger near the surface.
D)   Convergence of upper level winds causes this.
E)   Coriolis strengthens by combining with friction.F) B) and E)
G) A) and D)

Question 14

Stormy weather is more closely associated with anticyclones than with cyclones.

Accepted Answer

A) True 
 B)False

Question 15

Cyclonic airflow is characterized by:

Accepted Answer

A)   convergence aloft and divergence at the surface.
B)   divergence both at the surface and aloft.
C)   convergence both at the surface and aloft.
D)   divergence aloft and convergence at the surface.E) A) and B)
F) A) and C)

Question 16

You would expect vertical airflow in an anticyclone to result in:

Accepted Answer

A)   convergence aloft.
B)   convergence at the surface.
C)   clouds.
D)   divergence aloft.E) B) and C)
F) A) and B)

Question 17

Of the various elements of weather and climate, changes in air pressure are probably the most easily perceived by people.

Accepted Answer

A) True 
 B)False

Question 18

When air moves from the ocean onto land:

Accepted Answer

A)   curved flow is initiated.
B)   converging winds and ascending air result over the land.
C)   the winds tend to increase their speed.
D)   divergence and subsidence occur over the land.E) A) and B)
F) A) and C)

Question 19

A wind rose is used to identify:

Accepted Answer

A)   prevailing wind direction.
B)   locations with similar wind directions during a storm.
C)   wind direction at a given moment.
D)   the approximate degree of Coriolis deflection at a specific location.E) A) and B)
F) A) and C)

Question 20

Why is the 500- mb level chart important for forecasting?

Accepted Answer

A)   It helps determine surface temperatures.
B)   It helps determine the appropriate rate of adiabatic cooling.
C)   It demonstrates cloud cover.
D)   The winds at the 500- mb level determine the direction of movement for weather systems.E) None of the above
F) A) and D)

Exam 6: Air Pressure and Winds

Cyclonic airflow is characterized by:

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Stormy weather is more closely associated with anticyclones than with cyclones.

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In the southern hemisphere, anticyclonic winds flow:

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A wind rose is used to identify:

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The force that generates wind is:

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The effect of friction on the wind directly and/or indirectly alters its:

Correct AnswerverifiedShow Answer

Anticyclonic flow is:

Correct AnswerverifiedShow Answer

Of the various elements of weather and climate, changes in air pressure are probably the most easily perceived by people.

Correct AnswerverifiedShow Answer

The addition of water vapor will cause the density of air to:

Correct AnswerverifiedShow Answer

The primary cause of wind is not atmospheric pressure but atmospheric pressure differences.

Correct AnswerverifiedShow Answer

The main cause of the sea breeze is the unequal heating of land and water.

Correct AnswerverifiedShow Answer

The Coriolis effect is important only for motions that:

Correct AnswerverifiedShow Answer

You would expect vertical airflow in an anticyclone to result in:

Correct AnswerverifiedShow Answer

At a given pressure value, the air density will be highest when the temperature is coldest.

Correct AnswerverifiedShow Answer

Why is the 500- mb level chart important for forecasting?

Correct AnswerverifiedShow Answer

What is the average sea level pressure in the United States?

Correct AnswerverifiedShow Answer

Why do surface winds cross the isobars at an angle toward lower pressure (instead of blowing parallel to the isobars) ?

Correct AnswerverifiedShow Answer

When air moves from the ocean onto land:

Correct AnswerverifiedShow Answer

High air pressure zones are usually associated with:

Correct AnswerverifiedShow Answer

Standard sea level atmospheric pressure in the U.S. is approximately 29.92 inches of mercury.

Correct AnswerverifiedShow Answer

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