Question 1

List the four basic types of air masses. Give an example of where each type could originate.​

Accepted Answer

Air masses are grouped into five general categories according to their source region. Air masses that originate in polar latitudes are designated by the capital letter "P" (for polar); those that form in warm tropical regions are designated by the capital letter "T" (for tropical). If the source region is land, the air mass will be dry and the lowercase letter "c" (for continental) precedes the P or T. If the air mass originates over water, it will be moist-at least in the lower layers-and the lowercase letter "m" (for maritime) precedes the P or T. We can now see that polar air originating over land will be classified cP on a surface weather map, whereas tropical air originating over water will be marked as mT. In winter, an extremely cold air mass that forms over the Arctic is designated as cA continental arctic. Sometimes, however, it is difficult to distinguish between arctic and polar air masses, especially when the arctic air mass has traveled over warmer terrain.​

Question 2

​An mT air mass lying above a cold ground surface represents a(n) ____________________ situation.

Accepted Answer

​stable

Question 3

The origin of cP and cA air masses that enter the United States is

Accepted Answer

A)  ​Northern Siberia. 
B)  ​the Northern Atlantic Ocean. 
C)  ​Antarctica. 
D)  ​Northern Canada and Alaska. 
E)  ​the Eastern Pacific Ocean. 
A)  ​Northern Siberia. 
B)  ​the Northern Atlantic Ocean. 
C)  ​Antarctica. 
D)  ​Northern Canada and Alaska. 
E)  ​the Eastern Pacific Ocean. D

Question 4

Is it possible for a stationary front to produce precipitation? If so, would you expect to find the precipitation on the warm or the cold air side of the front?​

Accepted Answer

The weather along the stationary front i

Question 5

One would expect a cP air mass to be

Accepted Answer

A)  ​cold and dry. 
B)  ​cold and moist. 
C)  ​warm and dry. 
D)  ​warm and moist. 
E)  ​temperate and dry. 
A)  ​cold and dry. 
B)  ​cold and moist. 
C)  ​warm and dry. 
D)  ​warm and moist. 
E)  ​temperate and dry.

Question 6

Clear sunny days with very cold nights would be associated with what type of air mass?

Accepted Answer

A)  ​mP 
B)  ​mT 
C)  ​cP 
D)  ​cT 
E)  ​mA 
A)  ​mP 
B)  ​mT 
C)  ​cP 
D)  ​cT 
E)  ​mA

Question 7

Continental arctic and continental polar air masses can be difficult to distinguish, especially when the arctic air mass has traveled over warmer terrain.

Accepted Answer

A) True 
 B)False

Question 8

A good source region for an air mass would be

Accepted Answer

A)  ​mountains with deep valleys and strong surface winds. 
B)  ​generally flat areas of uniform composition with light surface winds. 
C)  ​hilly with deep valleys and light winds. 
D)  ​generally flat area of uniform composition with strong surface winds 
E)  ​mountainous areas with low surface pressure. 
A)  ​mountains with deep valleys and strong surface winds. 
B)  ​generally flat areas of uniform composition with light surface winds. 
C)  ​hilly with deep valleys and light winds. 
D)  ​generally flat area of uniform composition with strong surface winds 
E)  ​mountainous areas with low surface pressure.

Question 9

Suppose a maritime polar air mass moving eastward from the Pacific Ocean travels across the United States. Describe all of the modifications that could take place as this air mass moves eastward in winter. In summer.​

Accepted Answer

The mP air mass would dry considerably a

Question 10

An upper-air front involves downward motion of the

Accepted Answer

A)  ​tropopause. 
B)  ​stratopause. 
C)  ​low-level jet. 
D)  ​both tropopause and low-level jet 
E)  ​both stratopause and low-level jet. 
A)  ​tropopause. 
B)  ​stratopause. 
C)  ​low-level jet. 
D)  ​both tropopause and low-level jet 
E)  ​both stratopause and low-level jet.

Question 11

​The weather forecast "Cool today with rain becoming heavy at times by this afternoon. Warmer tomorrow. Winds southeasterly becoming westerly by tomorrow morning." suggests that a warm occluded front is going to pass the area.

Accepted Answer

A) True 
 B)False

Question 12

A true cold front on a weather map is always

Accepted Answer

A)  ​associated with precipitation. 
B)  ​associated with a wind shift. 
C)  ​followed by drier air. 
D)  ​followed by cooler air. 
E)  ​followed by moist air. 
A)  ​associated with precipitation. 
B)  ​associated with a wind shift. 
C)  ​followed by drier air. 
D)  ​followed by cooler air. 
E)  ​followed by moist air.

Question 13

Occluded fronts are colored ____________________ on a surface weather map.​

Accepted Answer

The answer of Occluded fronts are colored ____________________ on a...

Question 14

The central United States is a very good air mass source region.

Accepted Answer

A) True 
 B)False

Question 15

The same cold front typically produces more rain over Kentucky than over western Kansas.

Accepted Answer

A) True 
 B)False

Question 16

What type of air mass would be responsible for refreshing cool, dry breezes after a long summer hot spell in the Central Plains?​

Accepted Answer

A)  ​mP 
B)  ​mT 
C)  ​cP 
D)  ​cT 
E)  ​mA 
A)  ​mP 
B)  ​mT 
C)  ​cP 
D)  ​cT 
E)  ​mA

Question 17

When a very cold air mass covers half of the United States, a very warm air mass often covers the other half. Explain how this happens.​

Accepted Answer

When a very cold air mass moves out of C

Question 18

A situation, where the cold, damp air is confined to the eastern side of mountains, is called​

Accepted Answer

A)  ​cold air trapping. 
B)  ​"back door" front. 
C)  ​frontolysis. 
D)  ​cold occluded front. 
E)  ​cold air damming. 
A)  ​cold air trapping. 
B)  ​"back door" front. 
C)  ​frontolysis. 
D)  ​cold occluded front. 
E)  ​cold air damming.

Question 19

In winter, cold-front weather is typically more violent than warm-front weather. Why? Explain why this is not necessarily true in summer.​

Accepted Answer

In winter, cold fronts are well develope

Question 20

A(n) ___________________ fronth as essentially no movement.​

Accepted Answer

The answer of A(n) ___________________ fronth as essentially no movement.​...

List the four basic types of air masses. Give an example of where each type could originate.

An mT air mass lying above a cold ground surface represents a(n) ____________________ situation.

The origin of cP and cA air masses that enter the United States is

Is it possible for a stationary front to produce precipitation? If so, would you expect to find the precipitation on the warm or the cold air side of the front?

One would expect a cP air mass to be

Clear sunny days with very cold nights would be associated with what type of air mass?

Continental arctic and continental polar air masses can be difficult to distinguish, especially when the arctic air mass has traveled over warmer terrain.

A good source region for an air mass would be

Suppose a maritime polar air mass moving eastward from the Pacific Ocean travels across the United States. Describe all of the modifications that could take place as this air mass moves eastward in winter. In summer.

An upper-air front involves downward motion of the

The weather forecast "Cool today with rain becoming heavy at times by this afternoon. Warmer tomorrow. Winds southeasterly becoming westerly by tomorrow morning." suggests that a warm occluded front is going to pass the area.

A true cold front on a weather map is always

Occluded fronts are colored ____________________ on a surface weather map.

The central United States is a very good air mass source region.

The same cold front typically produces more rain over Kentucky than over western Kansas.

What type of air mass would be responsible for refreshing cool, dry breezes after a long summer hot spell in the Central Plains?

When a very cold air mass covers half of the United States, a very warm air mass often covers the other half. Explain how this happens.

A situation, where the cold, damp air is confined to the eastern side of mountains, is called

In winter, cold-front weather is typically more violent than warm-front weather. Why? Explain why this is not necessarily true in summer.

A(n) ___________________ fronth as essentially no movement.

Earth and Its Atmosphere

Energy - Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation - Dew - Fog - and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind - Small-Scale and Local Systems

Wind - Global Systems

Middle Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light - Color and Atmospheric Optics

Filters

Exam 11: Air Masses and Fronts

List the four basic types of air masses. Give an example of where each type could originate.​

​An mT air mass lying above a cold ground surface represents a(n) ____________________ situation.

The origin of cP and cA air masses that enter the United States is

Is it possible for a stationary front to produce precipitation? If so, would you expect to find the precipitation on the warm or the cold air side of the front?​

One would expect a cP air mass to be

Clear sunny days with very cold nights would be associated with what type of air mass?

Continental arctic and continental polar air masses can be difficult to distinguish, especially when the arctic air mass has traveled over warmer terrain.

A good source region for an air mass would be

Suppose a maritime polar air mass moving eastward from the Pacific Ocean travels across the United States. Describe all of the modifications that could take place as this air mass moves eastward in winter. In summer.​

An upper-air front involves downward motion of the

​The weather forecast "Cool today with rain becoming heavy at times by this afternoon. Warmer tomorrow. Winds southeasterly becoming westerly by tomorrow morning." suggests that a warm occluded front is going to pass the area.

A true cold front on a weather map is always

Occluded fronts are colored ____________________ on a surface weather map.​

The central United States is a very good air mass source region.

The same cold front typically produces more rain over Kentucky than over western Kansas.

What type of air mass would be responsible for refreshing cool, dry breezes after a long summer hot spell in the Central Plains?​

When a very cold air mass covers half of the United States, a very warm air mass often covers the other half. Explain how this happens.​

A situation, where the cold, damp air is confined to the eastern side of mountains, is called​

In winter, cold-front weather is typically more violent than warm-front weather. Why? Explain why this is not necessarily true in summer.​

A(n) ___________________ fronth as essentially no movement.​

Earth and Its Atmosphere

Energy - Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation - Dew - Fog - and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind - Small-Scale and Local Systems

Wind - Global Systems

Middle Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light - Color and Atmospheric Optics

Filters

List the four basic types of air masses. Give an example of where each type could originate.

An mT air mass lying above a cold ground surface represents a(n) ____________________ situation.

Is it possible for a stationary front to produce precipitation? If so, would you expect to find the precipitation on the warm or the cold air side of the front?

Suppose a maritime polar air mass moving eastward from the Pacific Ocean travels across the United States. Describe all of the modifications that could take place as this air mass moves eastward in winter. In summer.

The weather forecast "Cool today with rain becoming heavy at times by this afternoon. Warmer tomorrow. Winds southeasterly becoming westerly by tomorrow morning." suggests that a warm occluded front is going to pass the area.

Occluded fronts are colored ____________________ on a surface weather map.

What type of air mass would be responsible for refreshing cool, dry breezes after a long summer hot spell in the Central Plains?

When a very cold air mass covers half of the United States, a very warm air mass often covers the other half. Explain how this happens.

A situation, where the cold, damp air is confined to the eastern side of mountains, is called

In winter, cold-front weather is typically more violent than warm-front weather. Why? Explain why this is not necessarily true in summer.

A(n) ___________________ fronth as essentially no movement.