Question 1

The physical properties of an air mass are independent of its place of origin.

Accepted Answer

A) True 
 B)False  False

Question 2

An air mass from the Gulf of Mexico is called:

Accepted Answer

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

Question 3

The ______ is characterized by a strong jet stream pulling mT air from Hawaii towards California.

Accepted Answer

A)  Pineapple Express 
B)  Santa Ana Wind 
C)  Southeaster 
D)  Tropical Jet 
A)  Pineapple Express 
B)  Santa Ana Wind 
C)  Southeaster 
D)  Tropical Jet A

Question 4

Topography and the upward and downward movements of cyclones and anticylones create__________ modifications of air masses.

Accepted Answer

A)  convective 
B)  orographic 
C)  thermal 
D)  mechanical (dynamic) 
A)  convective 
B)  orographic 
C)  thermal 
D)  mechanical (dynamic)

Question 5

cT air masses are stable.

Accepted Answer

A) True 
 B)False

Question 6

A cT air mass is:

Accepted Answer

A)  cold and humid. 
B)  warm and dry. 
C)  warm and humid. 
D)  cold and dry. 
A)  cold and humid. 
B)  warm and dry. 
C)  warm and humid. 
D)  cold and dry.

Question 7

Which air mass causes occasional drought to the southern Great Plains of the United States?

Accepted Answer

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

Question 8

The Pineapple Express is responsible for supplying most of the moisture on the east side of the Rocky Mountains.

Accepted Answer

A) True 
 B)False

Question 9

Air mass source regions tend to be dominated by:

Accepted Answer

A)  cyclones. 
B)  fast wind speeds. 
C)  dry air. 
D)  slow moving anticyclones. 
E)  converging winds. 
A)  cyclones. 
B)  fast wind speeds. 
C)  dry air. 
D)  slow moving anticyclones. 
E)  converging winds.

Question 10

Where would you expect to find the greatest amount of lake- effect snowfall?

Accepted Answer

A)  on the windward side of the Great Lakes 
B)  directly north of the Great Lakes 
C)  on the leeward shores of the Great Lakes 
D)  on the western coasts of the Great Lakes 
A)  on the windward side of the Great Lakes 
B)  directly north of the Great Lakes 
C)  on the leeward shores of the Great Lakes 
D)  on the western coasts of the Great Lakes

Question 11

Why is Maritime Arctic left out of the air- mass classifications?

Accepted Answer

A)  They occur every ten years. 
B)  They only rarely occur. 
C)  They do not occur. 
A)  They occur every ten years. 
B)  They only rarely occur. 
C)  They do not occur.

Question 12

The typical amount of time it takes for an air mass to pass over a given area is on the order of a few:

Accepted Answer

A)  days. 
B)  hours. 
C)  minutes. 
D)  months. 
E)  weeks. 
A)  days. 
B)  hours. 
C)  minutes. 
D)  months. 
E)  weeks.

Question 13

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

Question 14

Why are maritime air masses from the north Atlantic of only limited concern for weather in the U.S.?

Accepted Answer

A)  Question is incorrect; these air masses are very important. 
B)  Temperatures are usually mild over this region. 
C)  They never cause severe storms. 
D)  Prevailing winds move them away from the U.S. 
E)  Polar fronts block these air masses from the U.S. 
A)  Question is incorrect; these air masses are very important. 
B)  Temperatures are usually mild over this region. 
C)  They never cause severe storms. 
D)  Prevailing winds move them away from the U.S. 
E)  Polar fronts block these air masses from the U.S.

Question 15

cP and cA air masses are never experienced in the southern U.S.

Accepted Answer

A) True 
 B)False

Question 16

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

Question 17

In the United States, lake- effect snows occur over which area?

Accepted Answer

A)  the windward side of the Mississippi River 
B)  the leeward shores of the Great Lakes 
C)  the eastern side of the Cascade Mountains 
D)  Lake Champlain 
A)  the windward side of the Mississippi River 
B)  the leeward shores of the Great Lakes 
C)  the eastern side of the Cascade Mountains 
D)  Lake Champlain

Question 18

Which one of the following conditions would enhance the development of a lake effect storm?

Accepted Answer

A)  aA cPw air mass 
B)  a large temperature gradient between the lake surface temperature the lower atmosphere 
C)  strong southerly flow 
D)  moisture advection associated with an mP air mass 
A)  aA cPw air mass 
B)  a large temperature gradient between the lake surface temperature the lower atmosphere 
C)  strong southerly flow 
D)  moisture advection associated with an mP air mass

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

mP air masses over the northeastern United States produce stable, clear skies in the summer and heavy snowstorms in the winter.

Accepted Answer

A) True 
 B)False

The physical properties of an air mass are independent of its place of origin.

An air mass from the Gulf of Mexico is called:

The ______ is characterized by a strong jet stream pulling mT air from Hawaii towards California.

Topography and the upward and downward movements of cyclones and anticylones create__________ modifications of air masses.

cT air masses are stable.

A cT air mass is:

Which air mass causes occasional drought to the southern Great Plains of the United States?

The Pineapple Express is responsible for supplying most of the moisture on the east side of the Rocky Mountains.

Air mass source regions tend to be dominated by:

Where would you expect to find the greatest amount of lake- effect snowfall?

Why is Maritime Arctic left out of the air- mass classifications?

The typical amount of time it takes for an air mass to pass over a given area is on the order of a few:

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?

Why are maritime air masses from the north Atlantic of only limited concern for weather in the U.S.?

cP and cA air masses are never experienced in the southern U.S.

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:

In the United States, lake- effect snows occur over which area?

Which one of the following conditions would enhance the development of a lake effect storm?

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

mP air masses over the northeastern United States produce stable, clear skies in the summer and heavy snowstorms in the winter.

Introduction to the Atmosphere

Heating Earths Surface and Atmosphere

Temperature

Moisture and Atmospheric Stability

Forms of Condensation and Precipitation

Air Pressure and Winds

Circulation of the Atmosphere

Weather Patterns

Thunderstorms and Tornadoes

Hurricanes

Weather Analysis and Forecasting

Air Pollution

The Changing Climate

World Climates

Optical Phenomena of the Atmosphere

Filters

Exam 8: Air Masses

The physical properties of an air mass are independent of its place of origin.

An air mass from the Gulf of Mexico is called:

The ______ is characterized by a strong jet stream pulling mT air from Hawaii towards California.

Topography and the upward and downward movements of cyclones and anticylones create__________ modifications of air masses.

cT air masses are stable.

A cT air mass is:

Which air mass causes occasional drought to the southern Great Plains of the United States?

The Pineapple Express is responsible for supplying most of the moisture on the east side of the Rocky Mountains.

Air mass source regions tend to be dominated by:

Where would you expect to find the greatest amount of lake- effect snowfall?

Why is Maritime Arctic left out of the air- mass classifications?

The typical amount of time it takes for an air mass to pass over a given area is on the order of a few:

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?

Why are maritime air masses from the north Atlantic of only limited concern for weather in the U.S.?

cP and cA air masses are never experienced in the southern U.S.

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:

In the United States, lake- effect snows occur over which area?

Which one of the following conditions would enhance the development of a lake effect storm?

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

mP air masses over the northeastern United States produce stable, clear skies in the summer and heavy snowstorms in the winter.

Introduction to the Atmosphere

Heating Earths Surface and Atmosphere

Temperature

Moisture and Atmospheric Stability

Forms of Condensation and Precipitation

Air Pressure and Winds

Circulation of the Atmosphere

Weather Patterns

Thunderstorms and Tornadoes

Hurricanes

Weather Analysis and Forecasting

Air Pollution

The Changing Climate

World Climates

Optical Phenomena of the Atmosphere

Filters