Exam 8: Air Masses

Visibility is generally better in a w air- mass than in a k air- mass.

A nor'easter typically occurs when:

Which of the following air masses probably has the lowest water vapor content?

The boundary of an air mass is a region of especially active weather.

When an air mass is warmer than the surface over which it moves, an inversion is likely.

Lake- effect snow occurs only during the early spring.

Which air mass is unstable in the winter but stable in the summer?

Name two source regions for Maritime Tropical air masses.

In the middle latitudes, atmospheric disturbances occur at the boundary zones separating air masses.

An mT air mass moving onto land in the Southeastern United States during the summer time typically becomes:

The properties of air masses change little, even if they travel thousands of kilometers.

When an air mass is warmer than the surface over which it is moving, its lower layers are chilled.

Maritime air masses form over landmasses.

Which of the following criteria is NOT a characteristic of a good source region?

When an area is experiencing several consecutive days of rather constant weather, it is experiencing:

The_____________ area where an air mass originates is called a:

Which two air masses are bitterly cold and very dry during winter?

To qualify as an air mass, a large body of air must have the identically same temperature at the same altitude throughout the air mass, even if the body of air is 1,000 kilometers wide.

Name two processes by which an air mass can be modified and give examples.

Siberian Express weather events are generally confined to Alaska and western Canada.