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8ES Chp 20: Storms
8th Grade Earth Science Chapter 20: Storms Coach Leach
| Term | Definition |
|---|---|
| air mass | A huge body of air in the troposphere with similar temperature and humidity throughout. |
| continental air mass | A low humidity air mass that originates over land. |
| maritime air mass | A high humidity air mass that originates over the oceans. |
| arctic air mass | A frigid air mass that originates over the poles. |
| polar air mass | A cool or cold air mass that originates over upper latitudes. |
| tropical air mass | A warm air mass that originates in the tropics. |
| front | The boundary where at least tow different air masses meet. |
| orographic lifting | The upward movement of air masses as they flow over mountains. |
| frontal wedging | The lifting of a warm air mass above a cool air mass acting as a wedge. |
| convergence | The lifting of air when horizontal air currents from opposite directions collide and rise into the atmosphere. |
| storm | A severe weather disturbance involving high winds, heavy precipitation, and other conditions such as lightning or low temperatures. |
| winter storm | A storm that brings heavy snow or sleet, high winds, and or unusually cold weather. |
| thunderstorm | A rainstorm that produces lightning; may include hail, bursts of strong winds and even tornadoes |
| lightning | An atmospheric electrical discharge that occurs either between clouds or between a cloud and the ground. |
| tornado | A destructive, localized, rapidly rotating cyclonic windstorm forming a funnel; usually associated with a special cumulonimbus cloud called a supercell. |
| hurricane | An immense cyclonic windstorm that forms over tropical or subtropical oceans; hazardous to ships at sea ad extremely damaging if it moves over land; also called a typhoon or cyclone. |
| tropical storm | A strong cyclonic storm with winds of at least 63 km/h or 39 mph that could develop into a hurricane if it gains strength. |
| hurricane eye | The low-pressure center of a hurricane containing relatively clear, calm rising air; usually has light winds, low precipitation, and low pressure. |
| storm surge | A higher than normal local sea level caused by seawater flowing toward the lower air pressure under a hurricane. |
| station model | A symbolic representation of data from a weather station on a weather map; with each number and symbol and their locations in the model, providing specific weather information. |
| synoptic weather map | A weather map that presents a summary or synopsis of weather data for a given time frame; the four types are the Surface Weather map, the Highest and Lowest Temperatures map, the Precipitation Areas and Amounts map and the 500 Millibar Height Contours map |
Created by:
CoachLeach
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