Exam 7: Air Masses and Weather Systems

A(n)____ forms when a cold front overtakes a warm front. ​

A(n)_______________ air mass is the coldest air mass that impacts North America. (two words)

If an area in the upper atmosphere is undergoing convergence, ____ is most likely occurring at Earth's surface below. ​

A weather map symbol of a line containing only semicircles that are all located on one side of the line depicts a(n)____. ​

What powers hurricanes, and how do winds move within these atmospheric disturbances?

A line of thunderstorms is called a squall line.

The temperature and humidity characteristics of an air mass are determined by the nature of its _______________ (the area where an air mass originates). (two words)

Surface pressure in a cyclone decreases towards the center.

Thunderstorms are most common during ____. ​

The phenomenon of _______________ is actually a shock wave created by rapidly expanding air.

The slope of a cold front is much gentler than the slope of a warm front.

A(n)_______________ is high seas pushed onshore by strong winds. They often cause flooding in low lying areas during a hurricane. (two words)

The "eye" of a hurricane is ____. ​

The air mass that originates over Mexico and the American Southwest is identified as ____. ​

What happens when the warm air rises at a cold front? ​

Which of the following air masses would have its origin over the Gulf of Mexico and the Caribbean Sea? ​

A heavy snow event accompanied by very strong winds is called a snowstorm.

Short duration, high intensity rainfall is associated most often with ____. ​

In winter, an mT air mass, moving from the Gulf of Mexico into the southern United States, would tend to become ____. ​

Two different air masses converge but the frontal boundary fails to move in any appreciable direction at a(n)____. ​