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Chapter 11

STUDY
PLAY
atmosphere
a blanket of air
trotosphere
the layer closest to the earth
air pressure
the weight of air pressing down to earth
local wind
a wind that results from a local difference in temperature
prevailing winds
global winds that always blow from the same direction
water cycle
water that continuously moves from earth's surface to the atmosphere and back to earth
evaporation
during a part of the water cycle liquid water changes to gas
condensation
when water changes from a gas to a liquid
humidity
the amount of water vapor in the air
precipitation
water that falls from the atmosphere to earth's surface
air mass
a large body of air that has the same temperature and humidity throughout
front
border where two air masses meet
climate
the pattern of weather an area experiences over a long period of time