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Science Chapter 25

Chapter 25 Vocab

Air Mass Large body of air with uniform temperature and moisture content
Anemometer Instrument used to measure wind speed
Anticyclone Storm that spirals outward from a high-pressure center
Bimetal Thermometer Instrument used to measure temperature, consisting of a bar made of two strips of different metals that curves when heated and straightens when cooled
Cold Front Boundary formed where a cold air mass overtakes and lifts a warm air mass
Continental Polar Describing a cold, dry air mass that forms over land in polar regions
Continental Tropical Describing a warm, dry air mass that forms over land in tropical regions
Electrical Thermometer Instrument used to measure temperature based on the increased flow of electricity through certain materials when the materials are heated
Front Boundary between air masses of different densities
Hurricane Severe storm that develops over tropical oceans, with strong winds that spiral in toward the intensely low-pressure storm center
Isobar Line drawn on a weather map connecting points of equal atmospheric pressure
Maritime Polar Describing a cold, moist air mass that forms over the ocean in polar areas
Maritime Tropical Describing a warm, moist air mass that forms over the ocean in tropical areas
Occluded Front Boundary formed where a fast moving cold air mass overtakes and lifts a warm air mass, completely cutting it off from the ground
Polar Front Boundary at which cold polar air meets the warmer air of the middle latitudes
Radar Device that can detect objects and weather conditions in the upper atmosphere by sending and reciving radio waves
Squall line Long line of heavy thunderstorms that may occur just ahead of a fast-moving cold front
Station Model Cluster of weather symbols plotted on a map indicating the weather conditions at a particular reporting station
Stationary Front Boundary formed where two air masses meet and neither is displaced
Thermograph Instrument that measures temperature changes by recording the movement of the bar of a bimetal thermometer
Thunderstorm Storm accompanied by thunder, lightning, and strong winds
Tornado Whirling, funnel-shaped cyclone
Typhoon Hurricane that forms over the Pacific Ocean
Warm Front Boundary formed where a warm air mass overtakes and rises over a cold air mass
Waterspout Tornado that occurs over the ocean
Wave Cyclone Large storm that develops along cold or stationary fronts, with winds that spiral in toward a central region of low air pressure
Wind Vane Instrument used to determine the direction of the wind
Created by: laurenkohler7