| Term | Definition |
|---|
| weather | present conditions of the atmosphere at any location |
| weather variables | characteristics of the atmosphere that change |
| Celsius Scale | temp scale based on H20 freezing at zero degrees and boiling at 100 degrees |
| water vapor | water in the gas phase |
| relative humidity | ratio of water vapor in the air to the maximum amount the air can carry at that temperature |
| barometer | instrument that measures air pressure |
| normal atmospheric pressure | pressure exerted by Earth's atmosphere at sea level, 1013.2 mb |
| dew point | temperature at which water vapor in the air wil begin to condense into liquid water |
| wind | Horizontal movements of air parallel to Earth's surface |
| visibility | horizontal distance through which the eye can distinguish objects |
| cloud ceiling | base height of cloud layers |
| cloud cover | fraction of sky that is obscured by clouds |
| sea breeze | breeze that blows from the sea |
| land breeze | breeze that blows from the land |
| air currents | air moving in a vertical direction |
| Kelvin Scale | temperature scale based on absolute zero(all movement stops) as 0 degrees |
| psychrometer | instrument that measures relative humidity and dew points |
| anemometer | instrument that measures wind speed |
| wind vane | instrument that measures wind direction |
Combine with other sets
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