The sun's rays enter the Earth's atmosphere, warming the planet. At the same time, some of that solar energy is reflected back out to space, ensuring the planet doesn't heat up too much. But as humans have pumped greenhouse gases into the atmosphere, the Earth's energy balance has tilted. The earth is tilted on its axis and the rays of the sun are falling directly on the equator which produces heat at the equator more than the other region. They fall slanting as we move north or south of the equatorial region. This heat also depends on the revolution of the earth.Wind is formed due to the uneven heating of the earth's surface by the sun. Since the earth's surface is made of various land and water formations, it absorbs the sun's radiation unevenly causing differences in the temperature. The factors that contribute to the uneven heating of earth by the sun include latitude, seasons and the time of the day. Most important point to remember in uneven heating is temperature differences. Wind is the movement of air, caused by the uneven heating of the Earth by the sun and the Earth's own rotation. Winds range from light breezes to natural hazards such as hurricanes and tornadoes.