The document discusses three main factors that influence winds: winds, air pressure, and wind currents. It describes how air pressure is caused by the weight of air above a location, with low pressure areas having less atmospheric mass and high pressure areas having more mass. It also explains the global wind patterns caused by uneven heating between the equator and poles and over land and water, which creates the polar easterlies, westerlies, and trade winds wind belts in each hemisphere.

1. Presented By- Ivana Gulati AND Paridhi Gupta

2. Winds
Air Pressure
Wind Currents
Wind currents between Equator and Poles
Wind currents due to uneven heating of land and water

3. .

4. AIR PRESSURE
Atmospheric pressure, sometimes also called barometric
pressure, is the pressure exerted by the weight of air in the
atmosphere of earth(or that of another planet). In most
circumstances atmospheric pressure is closely
approximated by the hydrostatic pressure caused by the
weight of air above the measurement point. On a given
plane, low-pressure areas have less atmospheric mass
above their location, whereas high-pressure areas have
more atmospheric mass above their location.

5. WIND CURRENTS
Global wind patterns: Winds are named by the
direction from which they blow. The globe is encircled
by six major wind belts, three in each hemisphere.
From pole to equator, they are the polar easterlies, the
westerlies, and the trade winds.
A. Wind currents between equator and Poles
B. Wind currents due to uneven heating of land and
water.

9. –William Arthur Ward