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Global Weather
| Term | Definition |
|---|---|
| water cycle | The continual movement of water among Earth's atmosphere, oceans, and land surface through evaporation, condensation, and precipitation |
| evaporation | The change of a substance from a liquid to a gas |
| transpiration | the release of water vapor into the air by leaves of a plant |
| sublimation | A change directly from the solid to the gaseous state without becoming liquid- when solid water changes to water vapor without becoming a liquid |
| condensation | The change from a gas to a liquid |
| precipitation | rain, snow, sleet, or hail that falls to the ground. |
| weather | the state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc. |
| humidity | a measure of the amount of water vapor in the air- measured by a hygrometer |
| river | are large, natural streams of fresh water. |
| stream | a small, narrow river. |
| lake | a large body of water surrounded by land on all sides |
| surface runoff | Water flowing off the land into bodies of surface water. |
| groundwater | Water found below the Earth's surface. |
| relative humidity | the amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature. |
| sea breeze | movement of air from sea to land during the day when cooler air from above the water moves over the land, forcing the heated, less dense air above the land to rise |
| dew point | The temperature at which condensation begins |
| air pressure | A force that is the result of the weight of a column of air pushing down on an area-measured by a barometer |
| wind | the movement of air caused by differences in air pressure |
| visibility | degree of clearness of the atmosphere, with reference to the distance at which objects can be clearly seen |
| air mass | A huge body of air that has similar temperature, humidity, and air pressure at any given height |
| front | The boundary where unlike air masses meet but do not mix |
| jet stream | a high-speed high-altitude air stream blowing from west to east near the top of the troposphere |
| thunderstorm | A small storm often accompanied by heavy precipitation and frequent thunder and lightning |
| hurricane | A severe storm that develops over tropical oceans and whose strong winds of more than 120 km/h spiral in toward the intensely low-pressure storm center |
| Coriolis effect | Causes moving air and water to turn left in the southern hemisphere and turn right in the northern hemisphere due to Earth's hemisphere. |
| global winds | winds that blow steadily from specific directions over long distances |
| local winds | Winds that blow over short distances caused by unequal heating of Earth's surface within a small area |
| ocean currents | Global patterns created from the movement of the oceans; such as the Gulf Stream |
| surface currents | A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface |
| upwelling | the upward movement of ocean water toward the surface as a result of diverging currents |
| climate | The average weather conditions in an area over a long period of time |
| latitude | distance north or south of the Equator, measured in degrees |
| longitude | the distance in degrees east or west of the prime meridian |
Created by:
KellyKirvin
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