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Topic 6 Lessons 3&4

Air Masses and Predicting Weather Changes

TermDefinition
air mass a huge body of air that has similar temperature, humidity and air pressure
jet stream a band of high-speed winds about 6 to 15 km above Earth's surface
front the boundary where the air masses meet
cold front when a cold air mass runs into a warm air mass (warm air pushes up and the cold below)
warm front when a fast-moving warm air mass overtakes a slower-moving cold air mass (warm air rises above the cold air)
occluded front when a warm air mass gets caught between two cold air masses
stationary front when neither air mass can move the other, a non-moving front
cyclone a swirling center of low air pressure
anticyclone a high-pressure center of dry air
meteorologist a scientist who studies and predicts weather
Created by: KHow424