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air mass

a huge body of air that has similar temperature, humidity and air pressure at any given height.


A warm air mass that forms in the tropics and has low air pressure


A cool air mass that forms north of 50 degrees north latitude or south of 50 degrees south latitude and has high air pressure


A humid air mass that forms over oceans


A dry air mass that forms over land


The boundary where unlike air masses meet but do not mix


A swirling center of low air pressure


A high-pressure center of dry air. The weather usually associated with this is dry and clear

stationary front

Cold and warm air masses meet, but neither can move the other

cold front

A fast-moving cold air mass overtakes a warm air mass

warm front

A warm air mass overtakes a slow-moving cold air mass

occluded front

A warm air mass is caught between two cooler air masses

How are air masses classified?

temperature and humidity

What are the four major types of air masses? are they dry or humid?

maritime polar and maritime tropical (humid) continental tropical and continental polar (dry)

What type of weather does a warm front bring?

rainy of cloudy

What type of weather does a cold front bring?

rain or snow, clouds

What type of weather does a stationary front bring?

clouds and precipitation

What type of weather does a occluded front bring?

temperature becomes cooler, weather may turn cloudy and rain or snow may fall

What is the difference between a cyclone and an anticyclone?

The direction of their winds

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