Wind is the natural movement of air or other gases relative to a planet's surface, caused primarily by differences in atmospheric pressure resulting from uneven heating of the Earth's surface by the sun
. When the sun heats the Earth's surface unevenly—because land and water absorb heat at different rates and because the equator receives more solar energy than the poles—air temperature and density vary, creating areas of high and low pressure. Air moves from high-pressure areas to low-pressure areas to balance these differences, and this movement of air is what we call wind
. The Earth's rotation also affects wind patterns through the Coriolis effect, which deflects moving air to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, shaping large-scale wind systems
. Winds can range from gentle breezes to strong gales and occur on various scales, from local breezes to global atmospheric circulation patterns
. In summary, wind is air in motion caused by the sun's uneven heating of the Earth, leading to pressure differences that drive air movement, influenced further by the planet's rotation
