Study Jams: Wind and Air Pressure. What causes wind? What are some of the different global wind belts? How does wind affect climate?. Moving Air. Wind. Wind is the horizontal movement of air from an area of high pressure to an area of lower pressure.
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Global winds divide the Northern Hemisphere into 3 slices and the Southern Hemisphere into 3 slices.
The slices are mirror images of each other (just like lines of latitude!)
1 = tradewinds
2 = westerlies
3 = polar easterlies
Earth’s rotation causes wind to blow in a curved path (clockwise in Northern hemisphere, and counterclockwise in Southern hemisphere)
If the Earth did not move, winds and currents would blow and flow in straight line.
Global winds are named based off of where they COME FROM!
Wind Reading Belts & Land and Water Breezes worksheet