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WG - Chapter 3 Vocabulary
World Geography Chapter 3 Vocabulary
20
Geography
9th Grade
09/01/2015

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Term
Weather
Definition
the condition of the atmosphere at a given place and time
Term
Climate
Definition
weather conditions in a area averaged over a long period of time
Term
Greenhouse Effect
Definition
the process of sunlight being changed into heat energy and then being trapped on the earth's surface by the atmosphere
Term
Air Pressure
Definition
the measurement of the force exerted by air
Term
Prevailing Wind
Definition
persistent winds that blow from the same direction
Term
Trade Winds
Definition
winds that blow from the Subtropical high pressure zones to the Equatorial low pressure zone
Term
Doldrums
Definition
the calm area with no prevailing winds along the Equator
Term
Westerlies
Definition
West to east winds that blow from the Subtropical high pressure zones to the Subpolar low pressure zones
Term
Front
Definition
when two air masses with very different temperatures and amounts of moisture meet
Term
Evaporation
Definition
the process by which water changes from a liquid to a gas

LIQUID->GAS
Term
Humidity
Definition
the amount of water vapor in the air
Term
Condensation
Definition
process by which water vapor changes from gas into liquid

GAS->LIQUID
Term
Precipitation
Definition
water droplets that fall. 4 forms are rain, sleet, snow, and hail
Term
Hurricane
Definition
violent, revolving tropical storms that form over warm ocean waters - just like typhoons
Term
Typhoon
Definition
violent revolving tropical storms that form over warm ocean waters - just like hurricanes
Term
Tornado
Definition
storms in the form of small, twisting, spirals of air
Term
Monsoon
Definition
a wind system in which winds completely reverse directions and bring wet & dry seasons
Term
Elevation
Definition
height on the earth's surface above or below sea level
Term
Permafrost
Definition
the condition of frozen water that remains frozen throughout the year
Term
Temperature
Definition
the measure of heat in the atmosphere
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