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Ch 12 Vocab. Words

Vocab.

TermDefinition
weather short-term variations in atmospheric phenomena that interact and affect the environment and life on Earth
climate long term average of variation in weather for a particular area
air mass a large volume of air that has the same characteristics, such as humidity and temperature
source region the area over which the air mass forms
coriolis effect a deflection of moving objects when the motion is described relative to a rotating reference frame
polar easterlies the wind zones between 60* N latitude and the north pole, and 60* S latitude and south pole
prevailing westerlies the wind systems on Earth located between latitudes 30* N and 60*N, and 30* S and 60* S
trade winds between latitudes 30* N and 30* S are two circulation belts of wind
jet stream a narrow band of fast wind
front air masses with different characteristics can collide and result in dramatic weather changes
thermometer measures temperature using either the Fahrenheit or Celsius scale
barometer measures air pressure
anemometer measures wind speed
hygrometer measures humidity
radiosonde an instrument used for gathering upper-atmospheric data
doppler effect the change in pitch or frequency that occurs due to the relative motion
station model is a record of weather data for a particular site at a particular time
isobar lines of equal pressure
isotherm lines of equal temperature
digital forecast is created by applying physical principles and mathematics to atmospheric variables will change over time
analog forecast is based on a comparison of current weather patterns to similar weather patterns from the past
Created by: selenamercado
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