Water Vapour in the Air (Grade 10 NSC Matric Geography): Flashcards
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Water vapour appearance
Water vapour appearance
Invisible gas in the atmosphere
Humidity definition
Humidity definition
Amount of moisture or water vapour present in the air
Relative humidity
Relative humidity
Proportion of water vapour to max capacity at given temp, as %
Saturated air means
Saturated air means
Air at 100% relative humidity, can't hold more water vapour
Warm air vs cool air water capacity
Warm air vs cool air water capacity
Warm air can hold much more water than cooler air
Dew point
Dew point
Temperature at which water vapour condenses into water droplets
Condensation level
Condensation level
Height above sea level where air reaches dew point & condenses
Why clouds have flat bottoms
Why clouds have flat bottoms
They form at same height where condensation begins
Relative humidity formula
Relative humidity formula
(Water vapour content / Water vapour capacity) × 100
Main factor affecting relative humidity
Main factor affecting relative humidity
Temperature (determines air's water vapour capacity)