Question 1

A line of active showers and thunderstorms that develops ahead of a fast-moving front is called a ____________________.

Accepted Answer

The answer of A line of active showers and thunderstorms...

Question 2

What type of front will most likely pass the area when the weather forecaster states "Light rain and cold today, with temperatures just above freezing. Southeasterly winds shifting to westerly tonight. Turning colder with rain becoming heavy and possibly changing to snow."

Accepted Answer

A cold occluded front is characterized by colder air replacing cool air, often leading to precipitation like rain or snow. The description of shifting winds and changing precipitation aligns with this type of front.

Question 3

Regions where air masses originate are known as ____________________.

Accepted Answer

The answer of Regions where air masses originate are known...

Question 4

Maritime polar air masses along the East Coast of the United States are usually ____________________ than those along the nation's West Coast.

Accepted Answer

The answer of Maritime polar air masses along the East...

Question 5

Along a dryline, the ____ may drop markedly.

Accepted Answer

Along a dryline, the dew point temperatures may drop markedly as it represents the boundary between moist and dry air masses, leading to a significant decrease in moisture on the dry side.

Question 6

Occluded fronts are colored ____________________ on a surface weather map.

Accepted Answer

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

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

Upslope precipitation occurs when moist air is forced to rise over a mountain range. As the air rises, it cools and condenses, forming clouds and precipitation. The type of precipitation that forms depends on the temperature of the air and the amount of moisture in the air. In some cases, upslope precipitation can generate heavy rain or snow.

Question 8

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

Accepted Answer

Air masses are classified according to their temperature and humidity characteristics, which are influenced by the surface over which the air mass forms.

Question 9

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

Accepted Answer

The answer of An mT air mass lying above a...

Question 10

A(n)____________________ is an extremely large body of air whose properties of temperature and humidity are fairly similar in any horizontal direction at any given altitude.

Accepted Answer

The answer of A(n)____________________ is an extremely large body of...

Question 11

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 12

Air masses are grouped into five general categories according to their ____________________.

Accepted Answer

The answer of Air masses are grouped into five general...

Question 13

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 "back-door" cold front is a meteorological term for a cold front that moves in from the northeast or east, opposite the more common direction of cold fronts in the United States. In this scenario, the wind shift and weather change in Boston are indicative of a back-door cold front coming from the northeast.

Question 14

Warm, humid, and a chance of thunderstorms is a typical weather pattern produced by an air mass designated as ____________________.

Accepted Answer

The answer of Warm, humid, and a chance of thunderstorms...

Question 15

A situation, where a cold front overtakes a slower moving warm front, then underrides and lifts off the ground both the warm front and the warm air mass, is called ____.

Accepted Answer

A cold occluded front occurs when a cold front overtakes a slower-moving warm front, lifting the warm air mass off the ground. This process involves the colder air mass sliding under the warmer air, which is then lifted upwards, leading to the formation of an occluded front.

Question 16

A front is the transition zone between two air masses of different ____.

Accepted Answer

A front is the transition zone between two air masses of different densities, which is often due to differences in temperature and humidity.

Question 17

The weather forecast "Increasing high cloudiness and cold this morning. Clouds increasing and lowering this afternoon, with a chance of snow or rain tonight. Precipitation ending tomorrow morning. Turning much warmer. Winds light easterly today, becoming southeasterly tonight and southwesterly tomorrow" suggests that a(n)____________________ front is going to pass the area.

Accepted Answer

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

Question 18

You are in upstate New York and observe the wind shift from easterly to southerly. This shift in wind is accompanied by a sudden rise in both the air temperature and dew-point temperature. This means a(n)____ front passed.

Accepted Answer

A shift in wind from easterly to southerly, accompanied by a sudden rise in both air temperature and dew-point temperature, indicates the passage of a warm front. Warm fronts are associated with a change in wind direction and an increase in temperature and moisture.

Question 19

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

Accepted Answer

The answer of Air masses have both horizontal and vertical...

Question 20

Barometric pressure usually falls with the approach of a(n)____________________ front or ____________________ front.

Accepted Answer

The answer of Barometric pressure usually falls with the approach...

Quiz 11: Air Masses and Fronts