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20 Cards in this Set

  • Front
  • Back

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

Cold front

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

Warm front

Cold and warm air massess meet but neither can move the other

Stationary front

A warm air mass is caught between two cooler air masses

Occluded front

Polar air mass

Type of air mass that forms north of 50 degrees north latitude and south of 50 degrees south latitude

Tropical air mass

Type of air mass that forms in the tropics it isn't warm with low pressure air pressure

Maritime air mass

Type of air mass that forms over an ocean that can be very humid

Continental air mass

Type of air mass that forms over land and can be dry

Major wind belts that generally push from west to east

Prevailing westerlies

High-speed Winds that are in prevailing Westerly lies and are about 10 kilometers above Earth's surface

Jet streams

Huge air masses that move across the land and oceans and collide with each other


A swirling center of low air pressure


High pressure centers of dry air

Anti cyclones

The effect of Earth's rotation on the direction of winds and currents in the ocean

Coriolis effect

Moving Air caused by the heating of the sun in the Earth's rotation


The characteristics that determine the type of air masses

Temperature and moisture

Hot and humid air masses

Maritime tropical

Cold and humid air masses

Maritime polar

Hot and dry air mass

Continental tropical

Cold and usually dry air mass

Continental polar