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GLOSSARY
ADVECTION: noun; the horizontal flow of air between two bodies of air which have different
temperatures
Ex. This is a local wind caused by advection.
AFFECT: verb; to produce a change
Ex. This bad weather will affect our travel plans.
AIR MASS: noun; a large body of air that has the same temperature and humidity characteristics
Ex. A continental air mass is usually dry.
ALOFT: adjective; above the ground, in the air
Ex. The winds aloft at 5,000 feet are much stronger than they are here on the surface.
ARCTIC: noun; the ice covered area at the north pole.
Ex. It is unusual for temperatures in the Arctic to be above freezing
CIRCULATION: noun; a regular movement that follows a circular path and returns to the starting place
Ex. There is a general circulation of air from the equator to the poles and back again.
CONFLICT : noun; the condition that results when one force meets and opposes another force
Ex. In this area there is a conflict between warm air masses moving northward and cold air
masses moving southward.
CONSTANT: adjective; continually the same
Ex. The mercury in the barometer doesn't have a constant height because the pressure
changes daily.
CONVECTION: noun; the circulation of air between two air masses that have different temperatures
Ex. This air movement is caused by convection.
CORIOLIS FORCE: noun; the force produced by the rotation of the earth
Ex. The Coriolis force causes the air to flow to the right.
COUNTERCLOCKWISE: adjective; opposite of clockwise.
Ex. Air moving into a "low" flows in a counterclockwise spiral around the "low" center.
CURRENT: noun; a movement of air (or water) through a mass of air (or water)
Ex. Don't swim in this part of the river, the current is too strong.
Ex. Convection is producing a strong current of air in this area.
DEFLECT : verb; to turn to a different direction
Ex. The warm air is deflected upward when it meets the cold air on the surface.
