Wind is the result of horizontal distinctions in air pressure. Air flows from locations of greater pressure to areas of lower pressure.The unequal heating of Earth"s surface generates press differences. Solar radiation is the ultimate energy resource for many wind.Three factors integrate to con- trol wind: pressure differences, the Coriolis effect, and also friction.

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Isobars space lines top top a map that attach places of same air pressure.The spacing of isobars indicates the lot of pressure adjust occurring end a given distance. These pressure alters are expressed as the push gradient.Closely spaced isobars indicate a steep press gra- dient and also high winds. Commonly spaced isobars suggest a weak pressure gradient and also light winds.
Jet streams space fast-moving rivers that air that travel between 120 and 240 kilometers per hour in a west-to-east direction.
The Coriolis result describeshow Earth"s rotation influence movingobjects. All free-moving objects orfluids, including the wind, aredeflected to the appropriate of their course ofmotion in the north Hemisphere.In the southerly Hemisphere, she deflected come the left.

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The counterclockwise rotation of the northern Hemisphere causes path deflection to the right. In the southerly Hemisphere, the clockwise rota- tion produce a comparable deflection, however to the left that the course of motion.
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