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ch. 13 vocab project
flashcards
| Question | Answer |
|---|---|
| Water Cycle | the continual movement of water among Earth's atmosphere, oceans and land surface through evaporation, condensation, and precipitation. |
| Evaporation | the process by which water molecules in liquid water escape into the air. |
| Humidity | the amount of water vapor in a given volume of air. |
| Relative Humidity | the percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temperature. |
| Psychrometer | an instrument used to measure relative humidity, consisting of a wet bulb thermometer and a dry bulb thermometer. |
| Condensation | the process by which molecules of water vapor in the air become liquid water |
| Dew Point | the temperature in which condensation begins |
| Cirrus | wispy, feathery clouds made mostly of ice crystals that form at high levels |
| Cumulus | fluffy, white clouds, usually with a flat bottom, that look like rounded piles of cottton |
| Stratus | clouds that form in flat layers and often cover much of the sky |
| Precipitation | any form of water that falls from the clouds and reaches earths surface |
| Air Mass | a huge body of air that has similar temperature, air pressure, and humidity at any given height |
| Tropical | warm air masses |
| Polar | cold air masses |
| Maritime | humid air mass that forms over oceans |
| Continental | 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 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 |
| Storm | A violent disturbance in the atmosphere |
| Thunderstorm | A small storm often occompanied by heavy precipitation and frequent thunder and lightning |
| Lightning | A sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground |
| Tornado | a rapidly whirling, funnel shaped cloud that reaches down from the storm to touch Earth's surface |
| Hurricane | A tropical storm that has winds of about 119 km per hour or higher |
| Storm Surge | A dome of water that sweeps across the coast where the hurricane lands |
| Meteoroligist | a scientist who studies the causes of weather and tries to predict it. |
| Isobar | A line on a weather map that joins places that have the same air pressure. |
| Isotherm | a line on a weather map that joins places that have the same tenperature. |
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