Question 1

When warm and cold air masses collide, the warm air is forced upward. Why does this occur?​

Accepted Answer

When warm and cold air masses come toget

Question 2

Describe some of the changes in weather conditions (winds, temperature, clouds, precipitation, pressure changes) you would expect to observe as a cold front approaches and passes through your location.​

Accepted Answer

Some of the weather changes would be sha

Question 3

Record breaking low temperatures are associated with which air mass?

Accepted Answer

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

Question 4

At the surface, occluded fronts are always followed by colder air.

Accepted Answer

A) True 
 B)False

Question 5

Why is the formation of air masses associated with high pressure systems rather than low pressure systems?​

Accepted Answer

In order for a huge mass of air to devel

Question 6

During the spring, on a warm, sunny day in Boston, Massachusetts, the wind shifts from southwesterly to northeasterly and the weather turns cold, damp, and overcast. This suggests that a "back door" cold front approached Boston from the

Accepted Answer

A)  ​southeast 
B)  ​southwest 
C)  ​northeast 
D)  ​west 
E)  ​northwest 
A)  ​southeast 
B)  ​southwest 
C)  ​northeast 
D)  ​west 
E)  ​northwest

Question 7

In some cases where a stationary front butts up against a mountain range winds blowing upslope can generate ____ (upslope precipitation) if there is enough moisture in the air.​

Accepted Answer

A)  ​heavy rain 
B)  ​heavy snow 
C)  ​hail 
D)  ​thunderstorms 
E)  ​light rain or snow 
A)  ​heavy rain 
B)  ​heavy snow 
C)  ​hail 
D)  ​thunderstorms 
E)  ​light rain or snow

Question 8

As the temperature contrast across a front lessens, the front will often weaken and dissipate. Such a condition is known as ____________________.​

Accepted Answer

The answer of As the temperature contrast across a front...

Question 9

The coldest of all air masses is

Accepted Answer

A)  ​mT. 
B)  ​mP. 
C)  ​cT. 
D)  ​cF. 
E)  ​cA. 
A)  ​mT. 
B)  ​mP. 
C)  ​cT. 
D)  ​cF. 
E)  ​cA.

Question 10

Air masses have both horizontal and vertical extent; consequently, the upward extension of a front is referred to as a(n) ____________________ or ____________________.​

Accepted Answer

frontal surface; fro

Question 11

In the Central Plains of the United States, continental polar air is welcome in both winter and summer.​

Accepted Answer

A) True 
 B)False

Question 12

"back door" cold front best describes which of the following situations?

Accepted Answer

A)  ​a cold front moving into Washington state from the Pacific ocean 
B)  ​a cold front moving into the desert southwest from Northern Mexico 
C)  ​a cold front that moves into New England from the Atlantic Ocean 
D)  ​a cold front that moves in a clockwise direction around a low pressure center 
E)  ​a cold front that originated over the Pacific Ocean. 
A)  ​a cold front moving into Washington state from the Pacific ocean 
B)  ​a cold front moving into the desert southwest from Northern Mexico 
C)  ​a cold front that moves into New England from the Atlantic Ocean 
D)  ​a cold front that moves in a clockwise direction around a low pressure center 
E)  ​a cold front that originated over the Pacific Ocean.

Question 13

During the spring, which air mass would most likely bring record-breaking high temperatures to the eastern half of the United States?

Accepted Answer

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

Question 14

Explain why the observation of a halo around the Moon or Sun could forewarn of the arrival of a warm front.​

Accepted Answer

Heading toward a warm front, the followi

Question 15

Continental polar (cP) and continental Arctic (cA) air masses

Accepted Answer

A)  ​both originate over polar oceans. 
B)  ​form in summer only. 
C)  ​originate over the ice- and snow-covered regions of the Arctic, northern Canada, and Alaska where long, clear nights allow for strong radiational cooling of the surface. 
D)  ​bring strong thunderstorms. 
E)  ​produce wet weather and temperatures around the freezing point. 
A)  ​both originate over polar oceans. 
B)  ​form in summer only. 
C)  ​originate over the ice- and snow-covered regions of the Arctic, northern Canada, and Alaska where long, clear nights allow for strong radiational cooling of the surface. 
D)  ​bring strong thunderstorms. 
E)  ​produce wet weather and temperatures around the freezing point.

Question 16

Air masses are usually classified according to their ____ and ____.

Accepted Answer

A)  ​pressure; humidity 
B)  ​wind direction; precipitation type 
C)  ​humidity; wind direction 
D)  ​temperature; pressure 
E)  ​temperature; humidity 
A)  ​pressure; humidity 
B)  ​wind direction; precipitation type 
C)  ​humidity; wind direction 
D)  ​temperature; pressure 
E)  ​temperature; humidity

Question 17

The weather forecast "Increasing cloudiness and warm today, with the possibility of showers by evening. Turning much colder tonight. Winds southwesterly, becoming gusty and shifting to northwesterly by tonight." suggests that a(n) ___________________ front is going to pass the area.​

Accepted Answer

The answer of The weather forecast "Increasing cloudiness and warm...

Question 18

Which air mass would show the most dramatic change in both temperature and moisture content as it moves over a large body of very warm water?

Accepted Answer

A)  ​cT in summer 
B)  ​cP in winter 
C)  ​mP in winter 
D)  ​mT in summer 
E)  ​mA in winter. 
A)  ​cT in summer 
B)  ​cP in winter 
C)  ​mP in winter 
D)  ​mT in summer 
E)  ​mA in winter.

Question 19

Lake-effect snows are best developed around the Great Lakes during

Accepted Answer

A)  ​early spring when moist, tropical air moves over the frozen lakes. 
B)  ​late fall and early winter when cold, dry polar air moves over the relatively warm water 
C)  ​late fall and early winter when moist, polar air sweeps in from the east. 
D)  ​middle winter when the unseasonably warm air mass moves over the cold water. 
E)  ​late winter after prolonged periods of cold weather. 
A)  ​early spring when moist, tropical air moves over the frozen lakes. 
B)  ​late fall and early winter when cold, dry polar air moves over the relatively warm water 
C)  ​late fall and early winter when moist, polar air sweeps in from the east. 
D)  ​middle winter when the unseasonably warm air mass moves over the cold water. 
E)  ​late winter after prolonged periods of cold weather.

Question 20

An air mass is characterized by similar properties of ____ and ____ in any horizontal direction.

Accepted Answer

A)  ​temperature; pressure 
B)  ​pressure; humidity 
C)  ​winds; humidity 
D)  ​temperature; humidity 
E)  ​pressure; winds 
A)  ​temperature; pressure 
B)  ​pressure; humidity 
C)  ​winds; humidity 
D)  ​temperature; humidity 
E)  ​pressure; winds

When warm and cold air masses collide, the warm air is forced upward. Why does this occur?

Describe some of the changes in weather conditions (winds, temperature, clouds, precipitation, pressure changes) you would expect to observe as a cold front approaches and passes through your location.

Record breaking low temperatures are associated with which air mass?

At the surface, occluded fronts are always followed by colder air.

Why is the formation of air masses associated with high pressure systems rather than low pressure systems?

During the spring, on a warm, sunny day in Boston, Massachusetts, the wind shifts from southwesterly to northeasterly and the weather turns cold, damp, and overcast. This suggests that a "back door" cold front approached Boston from the

In some cases where a stationary front butts up against a mountain range winds blowing upslope can generate ____ (upslope precipitation) if there is enough moisture in the air.

As the temperature contrast across a front lessens, the front will often weaken and dissipate. Such a condition is known as ____________________.

The coldest of all air masses is

Air masses have both horizontal and vertical extent; consequently, the upward extension of a front is referred to as a(n) or .

In the Central Plains of the United States, continental polar air is welcome in both winter and summer.

"back door" cold front best describes which of the following situations?

During the spring, which air mass would most likely bring record-breaking high temperatures to the eastern half of the United States?

Explain why the observation of a halo around the Moon or Sun could forewarn of the arrival of a warm front.

Continental polar (cP) and continental Arctic (cA) air masses

Air masses are usually classified according to their and .

The weather forecast "Increasing cloudiness and warm today, with the possibility of showers by evening. Turning much colder tonight. Winds southwesterly, becoming gusty and shifting to northwesterly by tonight." suggests that a(n) ___________________ front is going to pass the area.

Which air mass would show the most dramatic change in both temperature and moisture content as it moves over a large body of very warm water?

Lake-effect snows are best developed around the Great Lakes during

An air mass is characterized by similar properties of and in any horizontal direction.

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

When warm and cold air masses collide, the warm air is forced upward. Why does this occur?​

Describe some of the changes in weather conditions (winds, temperature, clouds, precipitation, pressure changes) you would expect to observe as a cold front approaches and passes through your location.​

Record breaking low temperatures are associated with which air mass?

At the surface, occluded fronts are always followed by colder air.

Why is the formation of air masses associated with high pressure systems rather than low pressure systems?​

During the spring, on a warm, sunny day in Boston, Massachusetts, the wind shifts from southwesterly to northeasterly and the weather turns cold, damp, and overcast. This suggests that a "back door" cold front approached Boston from the

In some cases where a stationary front butts up against a mountain range winds blowing upslope can generate ____ (upslope precipitation) if there is enough moisture in the air.​

As the temperature contrast across a front lessens, the front will often weaken and dissipate. Such a condition is known as ____________________.​

The coldest of all air masses is

Air masses have both horizontal and vertical extent; consequently, the upward extension of a front is referred to as a(n) ____________________ or ____________________.​

In the Central Plains of the United States, continental polar air is welcome in both winter and summer.​

"back door" cold front best describes which of the following situations?

During the spring, which air mass would most likely bring record-breaking high temperatures to the eastern half of the United States?

Explain why the observation of a halo around the Moon or Sun could forewarn of the arrival of a warm front.​

Continental polar (cP) and continental Arctic (cA) air masses

Air masses are usually classified according to their ____ and ____.

The weather forecast "Increasing cloudiness and warm today, with the possibility of showers by evening. Turning much colder tonight. Winds southwesterly, becoming gusty and shifting to northwesterly by tonight." suggests that a(n) ___________________ front is going to pass the area.​

Which air mass would show the most dramatic change in both temperature and moisture content as it moves over a large body of very warm water?

Lake-effect snows are best developed around the Great Lakes during

An air mass is characterized by similar properties of ____ and ____ in any horizontal direction.

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

When warm and cold air masses collide, the warm air is forced upward. Why does this occur?

Describe some of the changes in weather conditions (winds, temperature, clouds, precipitation, pressure changes) you would expect to observe as a cold front approaches and passes through your location.

Why is the formation of air masses associated with high pressure systems rather than low pressure systems?

In some cases where a stationary front butts up against a mountain range winds blowing upslope can generate ____ (upslope precipitation) if there is enough moisture in the air.

As the temperature contrast across a front lessens, the front will often weaken and dissipate. Such a condition is known as ____________________.

Air masses have both horizontal and vertical extent; consequently, the upward extension of a front is referred to as a(n) or .

In the Central Plains of the United States, continental polar air is welcome in both winter and summer.

Explain why the observation of a halo around the Moon or Sun could forewarn of the arrival of a warm front.

Air masses are usually classified according to their and .

The weather forecast "Increasing cloudiness and warm today, with the possibility of showers by evening. Turning much colder tonight. Winds southwesterly, becoming gusty and shifting to northwesterly by tonight." suggests that a(n) ___________________ front is going to pass the area.

An air mass is characterized by similar properties of and in any horizontal direction.