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6-12
The Atmosphere in Motion
| Question | Answer |
|---|---|
| the layer of gases surrounding the Earth | atmosphere |
| solids like dust, pollen, salt and tiny droplets such as acids in the atmosphere | aerosols |
| the atmospheric level closest to Earth's surface | troposphere |
| the layer above the troposphere that contains the ozone layer | stratosphere |
| the outermost layer of the atmosphere | exosphere |
| the layer of the atmosphere that can reflect AM radio waves | ionosphere |
| the never-ending process of Earth's water inconstant motion | water cycle |
| the amount of water vapor in the atmosphere | humidity |
| the temperature at which the air is so saturated with water vapor that condensation can occur | dew point |
| a measure of the amount of water vapor in the air compared to the amount that could be held a specific temperatures | relative humidity |
| rain, sleet, snow and hail are forms of this | precipitation |
| the apparent effect that the rotating Earth has on the direction of moving air | Coriolis Effect |
| the wind that brings the U.S. most of its weather, and blow from west to east | prevailing westerlies |
| winds by the equator that blow east to west | trade winds |
| winds near the poles that blow from the east | polar easterlies |
| bands of strong winds that blow near the top of the troposphere from west to east | jet stream |
| large body of air that develops over a particular region of Earth's surface | air mass |
| the boundary between two air masses of different temperatures | front |
| the energy flow that occurs between areas of opposite electrical charge | lightning |
| a violent, whirling wind that moves in a narrow path over land | tornado |
| a large storm that begins as an area of low pressure over tropical oceans | hurricane |