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Lewis-Weather
| Question | Answer |
|---|---|
| what's happening in the atmosphere at a certain time and place | weather |
| a measure of the average amount of motion of molecules; faster motion = warmer temperatures | temperature |
| instrument used to measure wind speed | anemometer |
| instrument used to measure temperature | thermometer |
| instrument used to measure wind direction | wind vane (weather vane) |
| instrument used to measure relative humidity | psychrometer |
| amount of water vapor in the air | humidity |
| amount of water vapor in the air compared to the amount needed for saturation (PERCENTAGE) | relative humidity |
| the TEMPERATURE at which air is saturated and condensation forms | dew point |
| the constant cycling of all waters on Earth | the water cycle |
| process in which liquid water changes to water vapor (liquid to gas) | evaporation |
| process of water vapor changing to a liquid water (gas to liquid) | condensation |
| any form of water that falls from clouds (rain, snow, sleet, hail) | precipitation |
| a large body of air with similar temperature and humidity levels | air mass |
| instrument used to measure air pressure | barometer |
| an imaginary boundary between two air masses of different temperature or moisture levels | front |
| a violent,rotating column of air caused by winds at different heights blowing in different directions and at different speeds | tornado |
| large, swirling low-pressure system forming over tropical (warm) waters with wind speeds greater than 74 mph | hurricane |
| area of calm in the center of a hurricane | eye |
| a person who studies the weather | meteorologist |
| collection of symbols showing weather conditions at a specific location | station model |
| line connecting areas of equal temperature | isotherm |
| line connecting areas with equal air pressure | isobar |