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chapter 16 vocab
| Question | Answer |
|---|---|
| the short tern state of the atmosphere, including temperature, humidity, percipitation, wind and visibility | weather |
| the amount of water vapor in the air. | humidity |
| the ratio of the amount of water in the air to the amount of water vapor needed to reach saturation at a given temperature | relative humidity |
| the change of atate from a gas to a liquid | condensation |
| a collection of small water droplets or ice crystals suspended in the air which forms when the air iss cooled and condensation | cloud |
| any form of water that falls to the earth's sureface from clouds | precipitation |
| a large body of air where temperature and moisture content are constant throughout | air mass |
| the boundary between air masses of different densities and usually different temperatures | front |
| an area in the atmosphere that has lower pressure than the surrounding areas and has winds that spiral toward the center | cyclone |
| tha rotation ofa ir around a high pressure center in the direstion opposite to earth's rotation | anticyclone |
| a usually brief, heavy storm that consists of rain, strong wind, lighting anf thunder | thunderstorm |
| anelectric discharge that takes place between a cloud and the ground between two clouds or between two parts of the same cloud | lightning |
| the sound coaused be the rapid expansion of air along an electrical strink | thunder |
| a destructive rotation colum of air that has very high wind speeds is visible as a funnel shaped cloud and touches the ground | tornado |
| a severe storm that deveops over tropical oceans and whose strong winds of more than 120km/h spiral in toward the intensely low pressure storm center. | hurricane |
| an instrument that measures and indicates temperature | thermometer |
| an instrument that measures atmospheric pressure | barometer |
| an instrument used to measure wind speed | anemometer |