Atmosphere and Ocean - 8
The Coriolis Effect is the cause of worldwide wind patterns in which winds are deflected and move to the right in the northern hemisphere and move to the left in the southern hemisphere. The Coriolis Effect is caused by the earth’s rotation. Cool air from the polar regions sink down while warm air from the equator rises. The rotation causes the winds to be deflected.
Six distinct global wind patterns are formed from the Coriolis effect- three on each hemisphere.
polar easterlies (60° to 90°latitude) 
westerlies (30° to 60° latitude)
east trade winds (0° to 30° latitude)
 
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