1. Major global wind belts Trade winds Polar easterlies
Global Winds
Global winds- winds that blow steadily from specific directions over long distances.
Major global wind belts
Trade winds
Polar easterlies
Prevailing westerlies
Image on p. 51

2. Global Winds
Doldrums
Direct sun rays hit equator and strongly heats Earth’s surface
Warm air will ______ (rise or sink) creating ______ (high or low) pressure.
Cool air moves in but is warmed rapidly
Little horizontal motion so winds near equator are weak
Horse Latitudes
Latitude- distance from equator measured in degrees
~30 N and S latitudes, the air stops moving toward poles and sinks creating a belt of air
How did this wind belt get its name “Horse Latitudes”?
Write a sentence in your own words.

3. Global Winds
Trade Winds
Between 30 L and the equator in both hemispheres
Rotation of Earth causes trade wind to curve west
Named because sailors relied on them to sail from Europe to Americas
Westerlies
Between 30 and 60 L in both hemispheres.
Rotation of Earth causes wind to curve east
Can carry moist air over the U.S. producing rain and snow

4. Global Winds
Polar Easterlies
Between poles and 60 L in both hemispheres
Rotation of Earth causes winds to curve west
Can carry cold Arctic air over most of U.S. producing snow and freezing weather.