Question 1

You would expect vertical airflow in a cyclone to result in:

Accepted Answer

A)  convergence aloft. 
B)  divergence aloft. 
C)  no cloud development. 
D)  divergence at the surface. 
A)  convergence aloft. 
B)  divergence aloft. 
C)  no cloud development. 
D)  divergence at the surface.

Question 2

If "fair" weather is approaching, the pressure tendency would probably be:

Accepted Answer

A)  steady. 
B)  rising. 
C)  falling. 
D)  Pressure tendency has nothing to do with forecasting good or bad weather. 
A)  steady. 
B)  rising. 
C)  falling. 
D)  Pressure tendency has nothing to do with forecasting good or bad weather.

Question 3

Horizontal variations in air pressure cause a force which makes the wind blow. These pressure variations are often caused by:

Accepted Answer

A)  warm temperatures in the stratosphere. 
B)  Earth's rotation. 
C)  non- circular shape of Earth. 
D)  greenhouse effect. 
E)  uneven heating of the earth's surface. 
A)  warm temperatures in the stratosphere. 
B)  Earth's rotation. 
C)  non- circular shape of Earth. 
D)  greenhouse effect. 
E)  uneven heating of the earth's surface.

Question 4

Explain why winds aloft flow roughly parallel to the isobars, while surface winds travel at an angle across the isobars.

Accepted Answer

In both cases, pressure gradient force d

Question 5

The National Weather Service measures air pressure in the unit of a millibar, which is equivalent to:

Accepted Answer

A)  500 Newtons per square meter. 
B)  10 Newtons per square meter. 
C)  1000 Newtons per square meter. 
D)  100 Newtons per square meter. 
A)  500 Newtons per square meter. 
B)  10 Newtons per square meter. 
C)  1000 Newtons per square meter. 
D)  100 Newtons per square meter.

Question 6

The Coriolis effect occurs because of this characteristic of the earth:

Accepted Answer

A)  its atmosphere. 
B)  its rotation. 
C)  its dense core. 
D)  its magnetic field. 
A)  its atmosphere. 
B)  its rotation. 
C)  its dense core. 
D)  its magnetic field.

Question 7

The sea breeze is a simple thermal circulation that does not involve a pressure gradient.

Accepted Answer

A) True 
 B)False

Question 8

The horizontal movement of air is called______ .

Accepted Answer

The answer of The horizontal movement of air is called______...

Question 9

With respect to the Coriolis force, which association is NOT correct?

Accepted Answer

A)  deflection - always at a 90 degree angle to the direction of air flow 
B)  North Pole - strongest deflection 
C)  Northern Hemisphere - deflection to the right of the wind's original direction 
D)  Low wind speeds - strongest deflection 
A)  deflection - always at a 90 degree angle to the direction of air flow 
B)  North Pole - strongest deflection 
C)  Northern Hemisphere - deflection to the right of the wind's original direction 
D)  Low wind speeds - strongest deflection

Question 10

The overall strength of a circulation system is determined by:

Accepted Answer

A)  the latitude. 
B)  its pressure gradient. 
C)  no one factor is more important than the others. 
D)  air temperature. 
E)  friction between the ground and the air. 
A)  the latitude. 
B)  its pressure gradient. 
C)  no one factor is more important than the others. 
D)  air temperature. 
E)  friction between the ground and the air.

Question 11

What is a limitation of an altimeter that pilots must account for?

Accepted Answer

A)  It has a low battery life at high altitudes. 
B)  Its readings may be too low or too high if the temperature varies from the expected. 
C)  They can't ever be used to determine altitude - only pressure. 
D)  Corrections are not as accurate at low levels as they are at higher levels. 
A)  It has a low battery life at high altitudes. 
B)  Its readings may be too low or too high if the temperature varies from the expected. 
C)  They can't ever be used to determine altitude - only pressure. 
D)  Corrections are not as accurate at low levels as they are at higher levels.

Question 12

A wind direction of 270 degrees means that the wind is blowing from the southeast.

Accepted Answer

A) True 
 B)False

Question 13

In the northern hemisphere, cyclonic winds flow:

Accepted Answer

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

Question 14

A steep pressure gradient:

Accepted Answer

A)  is only possible in the tropics. 
B)  produces light winds. 
C)  would be depicted by widely spaced isobars. 
D)  produces strong winds. 
A)  is only possible in the tropics. 
B)  produces light winds. 
C)  would be depicted by widely spaced isobars. 
D)  produces strong winds.

Question 15

_______are elongated high pressure areas extending towards the poles and are associated with_______ .

Accepted Answer

A)  troughs; warm, dry air 
B)  ridges; cool, wet weather 
C)  troughs; cool, wet weather 
D)  ridges; warm, dry air 
A)  troughs; warm, dry air 
B)  ridges; cool, wet weather 
C)  troughs; cool, wet weather 
D)  ridges; warm, dry air

Question 16

Which of the following has the smallest impact on winds?

Accepted Answer

A)  friction 
B)  Coriolis effect 
C)  pressure gradient force 
D)  humidity 
A)  friction 
B)  Coriolis effect 
C)  pressure gradient force 
D)  humidity

Question 17

How does friction act to change the direction of the wind near the earth's surface?

Accepted Answer

Friction reduces the

Question 18

Neglecting friction, the speed and direction of the horizontal wind are determined by:

Accepted Answer

A)  pressure gradient and Coriolis. 
B)  only gravity. 
C)  viscosity and turbulence. 
D)  gravity and humidity. 
E)  temperature and humidity. 
A)  pressure gradient and Coriolis. 
B)  only gravity. 
C)  viscosity and turbulence. 
D)  gravity and humidity. 
E)  temperature and humidity.

Question 19

If you want to locate the centers of high and low pressure systems, you will need a map that has:

Accepted Answer

A)  isodrosotherms. 
B)  contour lines. 
C)  isotherms. 
D)  isobars. 
A)  isodrosotherms. 
B)  contour lines. 
C)  isotherms. 
D)  isobars.

Question 20

The wind speed normally increases with height in the layer of air next to the ground. This illustrates the fact that:

Accepted Answer

A)  density decreases with height. 
B)  friction is present only close to the ground. 
C)  pressure decreases with height. 
D)  the lowest part of the atmosphere is turbulent. 
E)  temperature decreases with height. 
A)  density decreases with height. 
B)  friction is present only close to the ground. 
C)  pressure decreases with height. 
D)  the lowest part of the atmosphere is turbulent. 
E)  temperature decreases with height.

You would expect vertical airflow in a cyclone to result in:

If "fair" weather is approaching, the pressure tendency would probably be:

Horizontal variations in air pressure cause a force which makes the wind blow. These pressure variations are often caused by:

Explain why winds aloft flow roughly parallel to the isobars, while surface winds travel at an angle across the isobars.

The National Weather Service measures air pressure in the unit of a millibar, which is equivalent to:

The Coriolis effect occurs because of this characteristic of the earth:

The sea breeze is a simple thermal circulation that does not involve a pressure gradient.

The horizontal movement of air is called______ .

With respect to the Coriolis force, which association is NOT correct?

The overall strength of a circulation system is determined by:

What is a limitation of an altimeter that pilots must account for?

A wind direction of 270 degrees means that the wind is blowing from the southeast.

In the northern hemisphere, cyclonic winds flow:

A steep pressure gradient:

_are elongated high pressure areas extending towards the poles and are associated with_ .

Which of the following has the smallest impact on winds?

How does friction act to change the direction of the wind near the earth's surface?

Neglecting friction, the speed and direction of the horizontal wind are determined by:

If you want to locate the centers of high and low pressure systems, you will need a map that has:

The wind speed normally increases with height in the layer of air next to the ground. This illustrates the fact that:

Introduction to the Atmosphere

Heating Earths Surface and Atmosphere

Temperature

Moisture and Atmospheric Stability

Forms of Condensation and Precipitation

Circulation of the Atmosphere

Air Masses

Weather Patterns

Thunderstorms and Tornadoes

Hurricanes

Weather Analysis and Forecasting

Air Pollution

The Changing Climate

World Climates

Optical Phenomena of the Atmosphere

Filters

Exam 6: Air Pressure and Winds

You would expect vertical airflow in a cyclone to result in:

If "fair" weather is approaching, the pressure tendency would probably be:

Horizontal variations in air pressure cause a force which makes the wind blow. These pressure variations are often caused by:

Explain why winds aloft flow roughly parallel to the isobars, while surface winds travel at an angle across the isobars.

The National Weather Service measures air pressure in the unit of a millibar, which is equivalent to:

The Coriolis effect occurs because of this characteristic of the earth:

The sea breeze is a simple thermal circulation that does not involve a pressure gradient.

The horizontal movement of air is called______ .

With respect to the Coriolis force, which association is NOT correct?

The overall strength of a circulation system is determined by:

What is a limitation of an altimeter that pilots must account for?

A wind direction of 270 degrees means that the wind is blowing from the southeast.

In the northern hemisphere, cyclonic winds flow:

A steep pressure gradient:

_______are elongated high pressure areas extending towards the poles and are associated with_______ .

Which of the following has the smallest impact on winds?

How does friction act to change the direction of the wind near the earth's surface?

Neglecting friction, the speed and direction of the horizontal wind are determined by:

If you want to locate the centers of high and low pressure systems, you will need a map that has:

The wind speed normally increases with height in the layer of air next to the ground. This illustrates the fact that:

Introduction to the Atmosphere

Heating Earths Surface and Atmosphere

Temperature

Moisture and Atmospheric Stability

Forms of Condensation and Precipitation

Circulation of the Atmosphere

Air Masses

Weather Patterns

Thunderstorms and Tornadoes

Hurricanes

Weather Analysis and Forecasting

Air Pollution

The Changing Climate

World Climates

Optical Phenomena of the Atmosphere

Filters

_are elongated high pressure areas extending towards the poles and are associated with_ .