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chapter 11 ks vocab
Term | Definition |
---|---|
troposphere | the layer closest to Earth's surface. contains most of the mass of the atmosphere |
stratosphere | above the tropopause, a layer in which air temperature mainly increases with altitude and contains the ozone layer |
mesosphere | above the stratopause, about 50 km to 100 km above Earth's surface |
thermosphere | the layer between about 100 km and 500 km above Earth's surface |
exosphere | the outermost layer of Earth's atmosphere |
radiation | the transfer of thermal energy by electromagnetic waves. |
conduction | the transfer of thermal energy between objects when their objects when their atoms or molecules collide |
convection | the transfer of thermal energy by the movement of heated material from one place to another |
Temperature Inversion | an increase in temperature with height in an atmospheric layer. |
Humidity | the amount of water vapor in the atmosphere at a given location on Earth's surface. |
Saturation | Occurs when the amount of water vapor in a volume of air has reached the maximum amount |
Relative humidity | the amount of water vapor in a volume of air relative to the amount of water vapor needed for that volume of air to reach saturation |
Dew point | The temperature to which air must be cooled at constant pressure to reach saturation |
Latent heat | The extra thermal energy contained in water vapor compared to liquid water |
Condensation nucleus | A small particle in the atmosphere around which water droplets can form. |
Orographic | Occurs when an air mass is forced to rise over a topographic barrier |
Cumulus | Puffy, lumpy-looking clouds that usually occur blow 2000 m |
Stratus | A layered sheetlike cloud that covers much or all of the sky in a given area. |
Cirrus | Often have a wispy, indistinct appearance. |
Precipitation | Rain, snow, sleet, and hail are the four main types of precipitation. |
Coalescence | Occurs when cloud droplets collide and join together to form a larger droplet |