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Weather Patterns Ch3

Prentice Hall Chapter 3 Weather and Climate

QuestionAnswer
air mass a huge body of air that has similar temperature, pressure, and humidity throughout
tropical a warm air mass tha forms in the tropics and has low air pressure.
maritime a humid air mass that forms over oceans
occluded cut off, as the warm air mass at an occluded front is cut off from the ground by cooler air beneath it.
continental a dry air mass that forms over land
cyclone a swirling center of low pressure
polar a cold air mass that forms north of 50 degrees north latitude or south 50 degrees south latitude and has high air pressure.
front the area where air masses meet and do not mix
anticyclone a high-pressure center of dry air
storm a violent disturbance in the atmosphere (troposphere)
tornado a rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud to touch Earth's surface, usually leaving a destructive path.
storm surge a dome of water that sweeps across the coast where a hurricane lands
lightning a sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud or between a cloud and the ground.
hurricane a tropical storm that has winds of 119 kilometers per hour or higher: typically about 600 km across.
evacuate to move away temporarily
flash flood a sudden violent flood that occurs within a few hours, or even minutes, of a heavy rainstorm.
meteorologist scientists who study the causes of weather and try to predict it.
El Nino An event that occurs every two to seven years in the Pacific Ocean, during which winds shift and push warm surface water toward the coast of South America; it can cause dramatic climate changes.
isobar lines on a map joining places that have the same air pressure.
isotherm lines on a map joining places that have the same temperature.
Created by: melaniebird
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