Question 1

Most of the precipitation for the region east of the Rocky Mountains comes from:

Accepted Answer

A)  modified mP air masses. 
B)  mA air masses. 
C)  mT air masses. 
D)  evaporation from soils and vegetation. 
A)  modified mP air masses. 
B)  mA air masses. 
C)  mT air masses. 
D)  evaporation from soils and vegetation.

Question 2

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

Accepted Answer

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

Question 3

The air mass provides much of the moisture for precipitation in the central and eastern United States.

Accepted Answer

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

Question 4

Maritime tropical (mT) air masses are the most important source of moisture along the Pacific Coast.

Accepted Answer

A) True 
 B)False

Question 5

Characteristics of an air mass source region include:

Accepted Answer

A)  jet stream winds aloft. 
B)  high elevation. 
C)  sharp temperature contrasts. 
D)  uniformity of temperature and moisture. 
A)  jet stream winds aloft. 
B)  high elevation. 
C)  sharp temperature contrasts. 
D)  uniformity of temperature and moisture.

Question 6

List the basic criteria for an air- mass source region. Then, identify the source regions that influence North America, along with the types of air masses that originate in each.

Accepted Answer

air masses must be able to stagnate and

Question 7

The majority of the continental U.S. is not an air mass source region.

Accepted Answer

A) True 
 B)False

Question 8

Which air mass does not usually influence weather in the United States during the summer?

Accepted Answer

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

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

An air mass can not be modified when moving across country.

Accepted Answer

A) True 
 B)False

Question 11

The mT air masses from the Gulf- Caribbean- Atlantic source region greatly affect the weather of the United States east of the Rocky Mountains.

Accepted Answer

A) True 
 B)False

Question 12

The symbol used when classifying Maritime Polar air masses is MP.

Accepted Answer

A) True 
 B)False

Question 13

As wintertime cP or cA air moves outward from its source region, it carries its warm wet weather to the United States.

Accepted Answer

A) True 
 B)False

Question 14

The cP air- mass in North America originates in:

Accepted Answer

A)  Greenland. 
B)  interior Alaska and Canada. 
C)  the North Atlantic. 
D)  Siberia. 
E)  the Arctic basin. 
A)  Greenland. 
B)  interior Alaska and Canada. 
C)  the North Atlantic. 
D)  Siberia. 
E)  the Arctic basin.

Question 15

An ideal source region of air masses should be:

Accepted Answer

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

Question 16

Orographic precipitation in the western U.S. is often associated with the Pacific mP air mass.

Accepted Answer

A) True 
 B)False

Question 17

Maritime Arctic air masses do not form very often.

Accepted Answer

A) True 
 B)False

Question 18

What is an atmospheric river?

Accepted Answer

A)  A period of extended rainfall in areas that are typically very dry. 
B)  A zone of saturated air and frequent fog near the Gulf Stream. 
C)  An atmospheric flow that transports vast amounts of moisture to regions outside of the tropics. 
D)  A zone of intense rainfall associated with an mP air mass. 
A)  A period of extended rainfall in areas that are typically very dry. 
B)  A zone of saturated air and frequent fog near the Gulf Stream. 
C)  An atmospheric flow that transports vast amounts of moisture to regions outside of the tropics. 
D)  A zone of intense rainfall associated with an mP air mass.

Question 19

Lines connecting places having equal rainfall on a map are called:

Accepted Answer

A)  isolines. 
B)  isobars. 
C)  isohyets. 
D)  isotopes. 
A)  isolines. 
B)  isobars. 
C)  isohyets. 
D)  isotopes.

Question 20

An air mass from the Gulf of Mexico that moves northward over the U.S. in winter would be labeled:

Accepted Answer

A)  mPw. 
B)  cTk. 
C)  mTw. 
D)  mTk. 
E)  cTw. 
A)  mPw. 
B)  cTk. 
C)  mTw. 
D)  mTk. 
E)  cTw.

Most of the precipitation for the region east of the Rocky Mountains comes from:

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

The air mass provides much of the moisture for precipitation in the central and eastern United States.

Maritime tropical (mT) air masses are the most important source of moisture along the Pacific Coast.

Characteristics of an air mass source region include:

List the basic criteria for an air- mass source region. Then, identify the source regions that influence North America, along with the types of air masses that originate in each.

The majority of the continental U.S. is not an air mass source region.

Which air mass does not usually influence weather in the United States during the summer?

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

An air mass can not be modified when moving across country.

The mT air masses from the Gulf- Caribbean- Atlantic source region greatly affect the weather of the United States east of the Rocky Mountains.

The symbol used when classifying Maritime Polar air masses is MP.

As wintertime cP or cA air moves outward from its source region, it carries its warm wet weather to the United States.

The cP air- mass in North America originates in:

An ideal source region of air masses should be:

Orographic precipitation in the western U.S. is often associated with the Pacific mP air mass.

Maritime Arctic air masses do not form very often.

What is an atmospheric river?

Lines connecting places having equal rainfall on a map are called:

An air mass from the Gulf of Mexico that moves northward over the U.S. in winter would be labeled:

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

Most of the precipitation for the region east of the Rocky Mountains comes from:

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

The air mass provides much of the moisture for precipitation in the central and eastern United States.

Maritime tropical (mT) air masses are the most important source of moisture along the Pacific Coast.

Characteristics of an air mass source region include:

List the basic criteria for an air- mass source region. Then, identify the source regions that influence North America, along with the types of air masses that originate in each.

The majority of the continental U.S. is not an air mass source region.

Which air mass does not usually influence weather in the United States during the summer?

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

An air mass can not be modified when moving across country.

The mT air masses from the Gulf- Caribbean- Atlantic source region greatly affect the weather of the United States east of the Rocky Mountains.

The symbol used when classifying Maritime Polar air masses is MP.

As wintertime cP or cA air moves outward from its source region, it carries its warm wet weather to the United States.

The cP air- mass in North America originates in:

An ideal source region of air masses should be:

Orographic precipitation in the western U.S. is often associated with the Pacific mP air mass.

Maritime Arctic air masses do not form very often.

What is an atmospheric river?

Lines connecting places having equal rainfall on a map are called:

An air mass from the Gulf of Mexico that moves northward over the U.S. in winter would be labeled:

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