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Weather Vocab
A stack to help you study/learn about weather.
| Term | Definition |
|---|---|
| air mass | a body of air extending over a large area that develops and retains specific characteristics of pressure, temperature and humidity |
| atmospheric pressure (air pressure) | the force exerted on a surface by the air above it as gravity pulls it to Earth |
| cold front | the border between an advancing cold air mass and a retreating warm air mass |
| global winds | winds that act as a heat transfer system due to the unequal heating of Earth’s surface |
| high pressure system | Occurs when the atmospheric pressure at the surface of the Earth is GREATER than the surrounding environment Clear skies, light breeze, sunshine |
| humidity | the amount of water vapor in the air |
| jet stream | narrow bands of strong wind that generally blow from west to east across the globe |
| low pressure system | Occurs when the atmospheric pressure at the surface of the Earth is LOWER than the surrounding environment. Overcast skies, strong winds, thunderstorms |
| regional geography | the study of specific regions of Earth |
| relative humidity | the measure of the actual amount of water vapor in the air |
| stationary front | this occurs when 2 air masses are pushing against each other but neither is powerful enough to move the other |
| temperature | a measure of the average kinetic energy of particles in a substance |
| thunderstorm | a rain bearing cloud that also produces lightning |
| warm front | when a warm air mass pushes into a cooler air mass |
| weather conditions | the regional weather during a defined period of time |
| wind direction | the direction from which the wind is blowing at a given location |