Introduction: The source of the wind is the sun. The winds come from the suns energy falling on the earth’s surface. Due to the orientation of the earth’s surface to the sun’s rays near the equator the rays strike the surface at more optimum angles. The effect is that the air near the surface in tropical regions is heated more than the air near the surface of the polar regions. This leads to convection currents in the atmosphere, ie the movement of air due to changes in its density and pressure. This air movement is the principal cause of the winds.

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