A huge body of air that has similar tempyratures, pressure, and humidity throughout.

a warm air mass that forms in the tropics and has low air pressure.

A cold air mass that forms north of 50deg. north latitude or south of 50deg. south latitude and has high air pressure.

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ch17 and 18 vocab

Question	Answer
air mass	A huge body of air that has similar tempyratures, pressure, and humidity throughout.
tropical	a warm air mass that forms in the tropics and has low air pressure.
polar	A cold air mass that forms north of 50deg. north latitude or south of 50deg. south latitude and has high air pressure.