Which two properties characterize an air mass

An air mass gets its characteristic properties from an area known as the ____.

Which type of air mass originates in northern Canada?

Maritime air masses form _____.

An mT air mass is best described as _____.

Which air masses have the greatest effect on weather conditions in much of the United States?

The boundary that separates different air masses is called a(n) _____.

On a weather map, which type of front is shown by a line with triangular points on one side?

On a weather map, which type of front is shown by a line with semicircles extending on one side?

What type of front forms when the surface position of the front does not move?

Which of the following is characteristic of the air mass labeled F?

Which air masses would be associated with cold, wet conditions?

When an active cold front overtakes a warm front, _____.

Along a front, which type of air is always forced up?

Which stage happens first in the life cycle of a middle-latitude cyclone?

Which of the following best describes the pressure in a middle-latitude cyclone?

What type of front usually produces several hours of light-to-moderate precipitation over a large region?

A cold, dry air mass that moves over warm, tropical waters will likely become ___.

A cT air mass is ___.

Which air mass may produce an occasional "nor'easter" during winter?

Along which type of front is the intensity of precipitation generally heavy, but short-lived?

How does surface air flow in a middle-latitude cyclone in the Northern Hemisphere?

Thunderstorms form when warm, humid air rises in an ___.

A rotating column of air is called a ___.

The center of a tornado is characterized by its ___.

Tornadoes are most frequent from ___.

Typhoon is another name for ___.

What causes a hurricane to lose energy when it moves onto land?