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Weather

TermDefinition
Weather The state of the atmosphere at a certain place and time
Dew Point The temperature that condensation begins; point that air is cool enough to create a cloud (or water we can see).
Condensation nuclei Small particles in the air that attract water and help produce condensation in clouds.
Saturation Point at which air is holding the maximum amount of water vapor
Stratus Low lying cloud in flat sheets or layers. Means “spread out”
Cumulus Puffy clouds that look like cotton balls which can be very tall. Means “heap” or “pile”
Cirrus High, thin, wispy clouds made of ice crystals. Means “curl of hair”
Nimbus Clouds that produce precipitation
Alto Prefix for medium level clouds
Fog Low lying cloud that is very close to the ground or a body of water where the surface is colder than air above it.
Relative Humidity Measure of the amount of water (moisture) in the air as compared to the maximum amount of water the air can hold (%).
Psychrometer Instrument used to measure relative humidity.
Local Winds Unequal heating of the earth within a small area.
Global Winds Winds that blow steadily from specific directions over long.
Pressure Systems Region of the earth’s atmosphere where pressure is either high or low.
Air mass Large volume of air with similar temperature and humidity throughout.
Fronts Boundary separating two air masses
Isobars Lines connecting points of equal atmospheric pressure
Isotherms Lines connecting points of equal temperature
Created by: VA-Science7
 

 



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