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ch 17 & 18.1
| Question | Answer |
|---|---|
| Huge body of air that has similar temperature,pressure,and humidity throughout | air mass |
| warm air mass that form in tropics and has low air pressure. | tropical |
| cold air masses that form north of 50 degrees north latitude and south of 50 degrees south latitude | polar |
| air masses that form over oceans | maritime |
| the area where air masses meet and do not mix | front |
| dry air masses that form over land | continental |
| a warm air mass that is cut-off from the ground | occluded |
| a swirling center of low air pressure | cyclones |
| high-pressure centers of dry air | anticyclones |
| a violent disturbance in the air | storm |
| a sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud or between a cloud and the ground | lightning |
| a rapidly whirling funnel shaped cloud that reaches down from a storm cloud to touch Earth's surface | tornado |
| a tropical storm that has winds up to 119km per hour or higher | hurricane |
| a dome of water that sweeps across the coast where a hurricane lands | storm surge |
| to move away temporarily | evacuate |
| a sudden violent flood that occurs within a few hours,or even minutes of a heavy rainstorm | flash flood |
| scientists who study the causes of weather and try to predict it | meteorologist |
| an abnormal climate event that happens every 2 to 7 years in the Pacific Ocean | El Nino |
| lines on a map joining places that have the same air pressure | isobar |
| lines on a map joining places that have the same temperature | isotherm |
| the average, year-after-year conditions of temp., precipitation, winds, and clouds in an area | climate |
| the side of mountains that faces the oncoming wind | windward |
| the downwind side of mountains | leeward |