11 terms



Terms in this set (...)

the boundary between two air masses with different temperatures and densities
-the air masses meet, but do NOT mix
-weather occurs along this boundary
Warm Front
-forms when warm air moves over cold, dense air
-warm air gradually replaces the cold air
-can bring drizzly rain
-warm clear weather often follows a warm front
Stationary Front
-forms when a cold air mass meets a warm air mass and they do not move, may occur because there is not enough wind to move them
-cloudy, wet weather often occurs
Cold Front
-forms when cold air moves under warm air, which is less dense, and pushes the warm air up quickly.
-can bring thunderstorms, heavy rains or snow depending upon the air temperature
-cooler weather often follows a cold front
Occluded Front
-forms when a warm air mass is caught between two colder air masses.
-cold air mass and cool air mass come together, the warm air caught between them is "cut off" (forced upward)
-can have cool temperatures and large amounts of rain and snow
Cold Front Symbol
Warm Front Symbol
Stationary Front Symbol
Occluded Front Symbol
High Pressure System
Clear Skies/ Cold air sinks
Low Pressure System
Cloudy Skies/ warm air rises