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Grade 7 Ch I3 Vocab

Pearson Weather and Climate

Air mass A huge body of air that has similar temperature, humidity, and air pressure at any given height
tropical a warm air mass that forms in the tropics and has low air pressure
polar a cold air mass that forms north of 50 degrees latitude or south of 50 degrees south latitude and has high pressure
maritime A humid air mass that forms over oceans
continental A dry air mass that forms over land
front The boundary where unlike air masses meet but do not mix
occluded Cut off, as in a front where a warm air mass is caught between two cooler air masses
cyclone A swirling center of low air pressure
anticyclone A high pressure center of dry air
tornado A rapidly whirling, funnel shaped cloud that reaches down to touch Earth’s surface
hurricane A tropical storm that has winds of about 119 km/hour or higher
meteorologist Scientists who study the causes of weather and try to predict it
isobar A line of the weather map the joins places that have the same air pressure
isotherm A line of the weather map the joins places that have the same temperature
Created by: DawnSimpson