Question 1

Continental polar air masses do not form in the summer in North America.

Accepted Answer

A) True 
 B)False

Question 2

If the lowercase letter k appears at the end of an air mass identification code, what can be said about the changes likely to happen within that air mass?

Accepted Answer

A)  The air mass will not undergo any air mass modifications. 
B)  The air mass is likely to become more stable. 
C)  The air mass is likely to become more unstable. 
D)  The expected air mass modifications are impossible to predict. 
A)  The air mass will not undergo any air mass modifications. 
B)  The air mass is likely to become more stable. 
C)  The air mass is likely to become more unstable. 
D)  The expected air mass modifications are impossible to predict.

Question 3

What is the air mass type and source region for "nor'easters"?

Accepted Answer

Maritime Polar (mP)

Question 4

The________ air mass may produce an occasional "nor'easter" in the winter.

Accepted Answer

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

Question 5

The lower- case letter m or c is used to designate the nature of the surface in the source region and hence the humidity characteristics of the air mass.

Accepted Answer

A) True 
 B)False

Question 6

An air mass is a body of air with:

Accepted Answer

A)  very low humidity in its lower layers. 
B)  at least two frontal zones. 
C)  very high pressure everywhere. 
D)  equal density throughout. 
E)  similar values of temperature and moisture at any given altitude. 
A)  very low humidity in its lower layers. 
B)  at least two frontal zones. 
C)  very high pressure everywhere. 
D)  equal density throughout. 
E)  similar values of temperature and moisture at any given altitude.

Question 7

Which region of origin for mT air masses has the most impact on North American weather?

Accepted Answer

A)  mT air masses from the Gulf of Mexico 
B)  mT air masses from the subtropical Pacific. 
C)  mT air masses from the Northern Pacific 
D)  mT air masses from Australia 
A)  mT air masses from the Gulf of Mexico 
B)  mT air masses from the subtropical Pacific. 
C)  mT air masses from the Northern Pacific 
D)  mT air masses from Australia

Question 8

Most mP air masses that influence the U.S. originate over:

Accepted Answer

A)  the Gulf of Mexico. 
B)  the Arctic Ocean. 
C)  the north Pacific. 
D)  the north Atlantic. 
A)  the Gulf of Mexico. 
B)  the Arctic Ocean. 
C)  the north Pacific. 
D)  the north Atlantic.

Question 9

Which of these is NOT a process by which air masses are modified?

Accepted Answer

A)  lifting over mountains 
B)  heating from below 
C)  cooling from below 
D)  evaporation of water 
E)  calm winds 
A)  lifting over mountains 
B)  heating from below 
C)  cooling from below 
D)  evaporation of water 
E)  calm winds

Question 10

What term would a meteorologist give to the weather event represented on the map above?

Accepted Answer

A)  The Pineapple Express 
B)  mP Express 
C)  The Siberian Express 
D)  The Polar Express 
A)  The Pineapple Express 
B)  mP Express 
C)  The Siberian Express 
D)  The Polar Express

Question 11

"Lake- effect" snow is associated with the _____________ air mass.

Accepted Answer

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

Question 12

Siberian Express is the term used when:

Accepted Answer

A)  an outbreak of bitterly cold air from Canada intrudes over a large part of the United States. 
B)  an mP air mass from the north Atlantic enters New England and generates snowfall. 
C)  an unusually cold air mass enters the Rocky Mountains. 
D)  a modified air mass originating in Siberia reaches the Pacific Northwest. 
A)  an outbreak of bitterly cold air from Canada intrudes over a large part of the United States. 
B)  an mP air mass from the north Atlantic enters New England and generates snowfall. 
C)  an unusually cold air mass enters the Rocky Mountains. 
D)  a modified air mass originating in Siberia reaches the Pacific Northwest.

Question 13

What air- mass contributes to the formation of thunderstorms in the central U.S.?

Accepted Answer

A)  mP 
B)  cA 
C)  mT 
D)  stormy ones 
A)  mP 
B)  cA 
C)  mT 
D)  stormy ones

Question 14

The place where an air mass originates is known as the _____.

Accepted Answer

The answer of The place where an air mass originates...

Question 15

Which of the following is NOT a good source region for air masses?

Accepted Answer

A)  the North Pacific 
B)  central Canada 
C)  the central United States 
D)  the Gulf of Mexico 
A)  the North Pacific 
B)  central Canada 
C)  the central United States 
D)  the Gulf of Mexico

Question 16

The coldest and driest winter air- mass in North America is the:

Accepted Answer

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

Question 17

Air masses are identified by two- letter codes.

Accepted Answer

A) True 
 B)False

Question 18

The usual size of an air mass is:

Accepted Answer

A)  at least 1600 km across. 
B)  around 1000 km across. 
C)  at most a few kilometers across. 
D)  between 100 and 200 km across. 
A)  at least 1600 km across. 
B)  around 1000 km across. 
C)  at most a few kilometers across. 
D)  between 100 and 200 km across.

Question 19

What does the lowercase letter w indicate about an air mass?

Accepted Answer

A)  The air mass is warmer than the surface over which it is passing. 
B)  The air mass is colder than the surface over which it is passing. 
C)  The air mass is drier than the surface over which it is passing. 
D)  The air mass is wetter than the surface over which it is passing. 
A)  The air mass is warmer than the surface over which it is passing. 
B)  The air mass is colder than the surface over which it is passing. 
C)  The air mass is drier than the surface over which it is passing. 
D)  The air mass is wetter than the surface over which it is passing.

Question 20

Where do cA air- masses originate?

Accepted Answer

A)  Arctic basin and Greenland ice cap 
B)  Patagonia 
C)  Interior Canada and Alaska 
D)  Northwestern Atlantic 
A)  Arctic basin and Greenland ice cap 
B)  Patagonia 
C)  Interior Canada and Alaska 
D)  Northwestern Atlantic

Continental polar air masses do not form in the summer in North America.

If the lowercase letter k appears at the end of an air mass identification code, what can be said about the changes likely to happen within that air mass?

What is the air mass type and source region for "nor'easters"?

The________ air mass may produce an occasional "nor'easter" in the winter.

The lower- case letter m or c is used to designate the nature of the surface in the source region and hence the humidity characteristics of the air mass.

An air mass is a body of air with:

Which region of origin for mT air masses has the most impact on North American weather?

Most mP air masses that influence the U.S. originate over:

Which of these is NOT a process by which air masses are modified?

What term would a meteorologist give to the weather event represented on the map above?

"Lake- effect" snow is associated with the _____________ air mass.

Siberian Express is the term used when:

What air- mass contributes to the formation of thunderstorms in the central U.S.?

The place where an air mass originates is known as the _____.

Which of the following is NOT a good source region for air masses?

The coldest and driest winter air- mass in North America is the:

Air masses are identified by two- letter codes.

The usual size of an air mass is:

What does the lowercase letter w indicate about an air mass?

Where do cA air- masses originate?

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

Continental polar air masses do not form in the summer in North America.

If the lowercase letter k appears at the end of an air mass identification code, what can be said about the changes likely to happen within that air mass?

What is the air mass type and source region for "nor'easters"?

The________ air mass may produce an occasional "nor'easter" in the winter.

The lower- case letter m or c is used to designate the nature of the surface in the source region and hence the humidity characteristics of the air mass.

An air mass is a body of air with:

Which region of origin for mT air masses has the most impact on North American weather?

Most mP air masses that influence the U.S. originate over:

Which of these is NOT a process by which air masses are modified?

What term would a meteorologist give to the weather event represented on the map above?

"Lake- effect" snow is associated with the _____________ air mass.

Siberian Express is the term used when:

What air- mass contributes to the formation of thunderstorms in the central U.S.?

The place where an air mass originates is known as the _____.

Which of the following is NOT a good source region for air masses?

The coldest and driest winter air- mass in North America is the:

Air masses are identified by two- letter codes.

The usual size of an air mass is:

What does the lowercase letter w indicate about an air mass?

Where do cA air- masses originate?

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