Question 1

The lake effect occurs when ____ air mass moves over a ____ body of water.

Accepted Answer

A)  an mT,cold 
B)  an mT,warm 
C)  a cP,cold 
D)  a cP,warm 
A)  an mT,cold 
B)  an mT,warm 
C)  a cP,cold 
D)  a cP,warm

Question 2

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

Question 3

Explain why the observation of a halo around the moon or sun could forewarn of the arrival of a warm front.

Accepted Answer

The observation of a halo around the moo

Question 4

Draw side views of a typical warm and cold front.Clearly indicate the temperatures of the separate air masses and show their directions of motion.What types of clouds would you expect to find and where? Where would you expect precipitation to occur?

Accepted Answer

For a typical warm front, the warm air

Question 5

Which of the following is not correct concerning a cold front?

Accepted Answer

A)  It marks the position of a trough of low pressure. 
B)  It marks a zone of shifting winds. 
C)  It is colored purple on a weather map. 
D)  It has cold air behind it. 
A)  It marks the position of a trough of low pressure. 
B)  It marks a zone of shifting winds. 
C)  It is colored purple on a weather map. 
D)  It has cold air behind it.

Question 6

How do upper-air fronts form?

Accepted Answer

The answer of How do upper-air fronts form?...

Question 7

The only indication on the station model of past weather conditions is the

Accepted Answer

A)  temperature. 
B)  dew point. 
C)  cloud cover. 
D)  wind direction. 
E)  pressure tendency. 
A)  temperature. 
B)  dew point. 
C)  cloud cover. 
D)  wind direction. 
E)  pressure tendency.

Question 8

Before the passage of a cold front the pressure normally ____,and after the passage of a cold front the pressure normally ____.

Accepted Answer

A)  drops,drops 
B)  drops,rises 
C)  rises,rises 
D)  rises,drops 
A)  drops,drops 
B)  drops,rises 
C)  rises,rises 
D)  rises,drops

Question 9

When comparing an "average" cold front to an "average" warm front,which of the following is not correct?

Accepted Answer

A)  Generally,cold fronts move faster than warm fronts. 
B)  Generally,cold fronts have steeper slopes. 
C)  Generally,precipitation covers a much broader area with a cold front. 
D)  Especially in winter,cumuliform clouds are more often associated with cold fronts. 
A)  Generally,cold fronts move faster than warm fronts. 
B)  Generally,cold fronts have steeper slopes. 
C)  Generally,precipitation covers a much broader area with a cold front. 
D)  Especially in winter,cumuliform clouds are more often associated with cold fronts.

Question 10

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

Question 11

The air mass with the highest actual water vapor content is

Accepted Answer

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

Question 12

What type of weather front would be responsible for the following weather forecast? "Increasing cloudiness and warm today with the possibility of showers by this evening.Turning much colder tonight.Winds southwesterly becoming gusty and shifting to northwesterly by tonight."

Accepted Answer

A)  cold front 
B)  warm front 
C)  cold-type occluded front 
D)  stationary front 
A)  cold front 
B)  warm front 
C)  cold-type occluded front 
D)  stationary front

Question 13

The word "frontogenesis" on a weather map would mean that

Accepted Answer

A)  a front is in the process of dissipating. 
B)  one front is about to overtake another front. 
C)  a front is regenerating or strengthening. 
D)  severe thunderstorms will form along a front. 
A)  a front is in the process of dissipating. 
B)  one front is about to overtake another front. 
C)  a front is regenerating or strengthening. 
D)  severe thunderstorms will form along a front.

Question 14

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

Accepted Answer

As a warm front approaches and passes th

Question 15

On a weather map,the transition zone between two air masses with sharply contrasting properties is marked by

Accepted Answer

A)  the letter "H." 
B)  the words "air mass weather." 
C)  a front. 
D)  the letter "L." 
A)  the letter "H." 
B)  the words "air mass weather." 
C)  a front. 
D)  the letter "L."

Question 16

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. 
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.

Question 17

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

Accepted Answer

A)  Northern Siberia. 
B)  Northern Atlantic Ocean. 
C)  Antarctica. 
D)  Northern Canada and Alaska. 
A)  Northern Siberia. 
B)  Northern Atlantic Ocean. 
C)  Antarctica. 
D)  Northern Canada and Alaska.

Question 18

Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because

Accepted Answer

A)  the water is colder along the Pacific coast. 
B)  the prevailing winds aloft are westerly. 
C)  the source region for mP air on the Atlantic coast is western Europe. 
D)  the water is warmer along the Atlantic coast. 
E)  the land is colder along the Atlantic coast. 
A)  the water is colder along the Pacific coast. 
B)  the prevailing winds aloft are westerly. 
C)  the source region for mP air on the Atlantic coast is western Europe. 
D)  the water is warmer along the Atlantic coast. 
E)  the land is colder along the Atlantic coast.

Question 19

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

Question 20

At a warm front,the warm air

Accepted Answer

A)  rises and cools. 
B)  rises and warms. 
C)  sinks and cools. 
D)  sinks and warms. 
A)  rises and cools. 
B)  rises and warms. 
C)  sinks and cools. 
D)  sinks and warms.

The lake effect occurs when air mass moves over a body of water.

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

Explain why the observation of a halo around the moon or sun could forewarn of the arrival of a warm front.

Draw side views of a typical warm and cold front.Clearly indicate the temperatures of the separate air masses and show their directions of motion.What types of clouds would you expect to find and where? Where would you expect precipitation to occur?

Which of the following is not correct concerning a cold front?

How do upper-air fronts form?

The only indication on the station model of past weather conditions is the

Before the passage of a cold front the pressure normally ,and after the passage of a cold front the pressure normally .

When comparing an "average" cold front to an "average" warm front,which of the following is not correct?

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

The air mass with the highest actual water vapor content is

What type of weather front would be responsible for the following weather forecast? "Increasing cloudiness and warm today with the possibility of showers by this evening.Turning much colder tonight.Winds southwesterly becoming gusty and shifting to northwesterly by tonight."

The word "frontogenesis" on a weather map would mean that

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

On a weather map,the transition zone between two air masses with sharply contrasting properties is marked by

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

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

Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because

One would expect a cP air mass to be

At a warm front,the warm air

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 and Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

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Exam 11: Air Masses and Fronts

The lake effect occurs when ____ air mass moves over a ____ body of water.

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

Explain why the observation of a halo around the moon or sun could forewarn of the arrival of a warm front.

Draw side views of a typical warm and cold front.Clearly indicate the temperatures of the separate air masses and show their directions of motion.What types of clouds would you expect to find and where? Where would you expect precipitation to occur?

Which of the following is not correct concerning a cold front?

How do upper-air fronts form?

The only indication on the station model of past weather conditions is the

Before the passage of a cold front the pressure normally ____,and after the passage of a cold front the pressure normally ____.

When comparing an "average" cold front to an "average" warm front,which of the following is not correct?

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

The air mass with the highest actual water vapor content is

What type of weather front would be responsible for the following weather forecast? "Increasing cloudiness and warm today with the possibility of showers by this evening.Turning much colder tonight.Winds southwesterly becoming gusty and shifting to northwesterly by tonight."

The word "frontogenesis" on a weather map would mean that

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

On a weather map,the transition zone between two air masses with sharply contrasting properties is marked by

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

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

Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because

One would expect a cP air mass to be

At a warm front,the warm air

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 and Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

Filters

The lake effect occurs when air mass moves over a body of water.

Before the passage of a cold front the pressure normally ,and after the passage of a cold front the pressure normally .