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45 Cards in this Set

  • Front
  • Back
Latent Heat
stored heat
Evaporation
liquid to gas
Condensation
gas to liquid, energy must be released
Melting
change from a soild to a liquid
Freezing
changes from a liquid to a soild
Sublimation
soild to a gas
Deposition
frost ( gas to solid)
Humidity
amount of water vapor in the atmosphere
Saturation
water entering the atmosphere equals the amount leaving
Relative humidity
the level of saturation of the air
Decrease temperature
does not change the amount of water, just the percent saturation
Dew Point
temperature at which the air is saturated and any decrease in temperature will allow water to be percipitated
Adiabatic cooling/heating
changes in temperature due to the expansion (cooling) or compression (heating) of gases
Decrease in air
decrease in temperature and the dew point is reacher
Stable atmosphere
rising air cools faster than the surrounding atmosphere
Unstable
rising air cools more slowly than the surrounding atmosphere
Cirrus Cloud
high, wispy, thin, icy
Cumulus Clouds
cotton balls, darker
Stratus Clouds
sheet of larger clouds
Nimbus Clouds
storm clouds
Radiation
from the rapid cooling of the land
Advection
warm air moving over a cold surface
Steam
due to evaportion
Rain
water drops over 1/2 mm
Drizzle
water drops less than 1/2 mm
Sleet
rain passes through a cold zone and freezes
Freezing Rain
rain freezes when contacting a cold surface
Hail
forms in cumulonimbus clouds in concertric layers
Wind
movement of air from an area of higher pressure to an area of lower pressure
Nuclei
form around dust, salt
Ice Crystals
forms as snow and may melt on the way down
Anticyclone
higher pressures toward the center
Cyclone
lower pressure toward the center
High pressure
air filling into warmer areas, so dew point is not reacher, fair condition
Low pressure
rising air cools and forms clouds
Front
boundary between air masses that differ in temperature
Warm Front
-warm air rises over cold air
-stable air, so flat, over few days, get some precipitation
Cold Front
-cold air forces itself unfer warm air
-cumulonimbus clouds so heavy, rapid, precipitaion
Thunderstrom
downdrafts develop with heavy rain
Lightning
negative stream initiate positive flow to cloud
Tornadoes
results from the rapid updraft of air rushing into an area of very low pressure, associated with cumulonimbus clouds, occur where very cold, dy air and very warm wet air meet
Hurricanes
also called typoons in the Pacific and cyclones in the indian
- winds must be over 74mph
Eye
center of the hurricane where conditions subside
Strom Surge
-most damage and death
-water pushed by hurricane may rasied local sea level by 10 feet
Lake effect snow
cool polar air picks up moisture over an inland lake