The majority of natural phenomena of people got used to treat, as something ordinary, arising without the reasons seen on that. At the same time wind is formed as a result of interaction of three global factors which determine also its force and the direction.
The atmosphere of Earth consists of several layers containing different types of gases. The above the layer is located, the it is less in it oxygen content. In these spheres there are gas molecules which move with a huge speed in the most various directions.
Wind – the natural phenomenon as a result of which air starts moving because of heating of layers of the atmosphere and change of pressure over the earth's surface. Emergence of streams of wind is connected with three main reasons. First, wind appears owing to a difference in temperature between certain sites of the atmosphere and sushi. Secondly, origin of wind is influenced by differences in pressure between different points of the atmosphere. The third factor – the so-called strength of Koriolios which arises at rotation of the globe round its pivot-center.
The two first reasons are closely connected among themselves. In warm places of the atmosphere, air mass has the smaller weight as its molecules with temperature increase make a start from each other stronger therefore pressure on these sites low. In cold parts of the atmosphere there are opposite processes – molecules, on the contrary, seek to approach as much as possible because of what air becomes heavier, and pressure which it puts upon the atmosphere grows. Wind appears when air flows move ahead from area of the low pressure, high in a zone, filling with itself emptiness in atmosphere layers. And the direction of wind always proceeds from sites with more high pressure. Speed or wind force directly depends on height at which there is a collision of air masses. At the big height of air much less, than below. Therefore its resistance is significantly lower here, and the speed of motion of the molecules, on the contrary, higher. Sil Koriolios is one of the main reasons for formation of global planetary winds which call "monsoons" and "trade winds". These strongest air flows differ in resistant character and can blow up to 6 months in a year.