Earth Science Ch. 20 Review

In the figure, which of the following is characteristic of the air mass labeled F?

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

A rotating column of air is called a(n) ____.

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

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

What is the first stage of a thunderstorm?

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

Weather patterns such as summer heat waves and winter cold spells are caused by _________.

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

Maritime air masses form ____.

What is the first sign of an approaching warm front?

Lake-effect snow is associated with which air mass?

Hurricanes are classified according to intensity using the ____.

Hurricanes form in tropical waters between the latitudes of ____.

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?

Which two properties characterize an air mass?

The greatest number of thunderstorms occur in the ____.

In which type of front is the flow of air on both sides of the front parallel to the front?

The eye of a hurricane has the ____.

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

A(n) ____ air mass is uniformly cold and dry in winter and cool and dry in summer.

An mT air mass is best described as ____.

A cT air mass is ____.

According to the figure, which air masses would be associated with cold, wet conditions?

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

What kind of shape is associated with a middle-latitude cyclone?

Thunderstorms form when warm, humid air rises in a(n) ____.

____________________ are the most powerful storms on Earth.

Which air mass may produce an occasional “nor’easter” during winter?

Which air mass is the source of much of the precipitation in the central and eastern US?

Which of the following would likely have the greatest range of pressure?

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

The weather behind a cold front is dominated by which of the following?

At any given time, there are an estimated _________________ thunderstorms in progress on Earth.