What is wind? How is it created? How does it move along the surface of the earth?

Answer 1

Wind is the roughly horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earth's surface. It occurs at all scales, from local breezes generated by heating of land surfaces and lasting tens of minutes to global winds resulting from solar heating of the Earth. The two major influences on the atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect).

Given a difference in barometric pressure between two air masses, a wind will arise between the two which tends to flow from the area of high pressure to the area of low pressure until the two air masses are at the same pressure, although these flows will be modified by the Coriolis effect in the extratropics.

Winds can be classified either by their scale, the kinds of forces which cause them (according to the atmospheric equations of motion), or the geographic regions in which they exist. There are global winds, such as the wind belts which exist between the atmospheric circulation cells. There are upper-level winds, such as the jet streams. There are synoptic-scale winds that result from pressure differences in surface air masses in the middle latitudes, and there are winds that come about as a consequence of geographic features such as the sea breeze. Mesoscale winds are those which act on a local scale, such as gust fronts. At the smallest scale are the microscale winds which blow on a scale of only tens to hundreds of metres and are essentially unpredictable, such as dust devils and microbursts.

Winds can also shape landforms, via a variety of eolian processes.

Answer 2

Wind is the roughly horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earth's surface. It occurs at all scales, from local breezes generated by heating of land surfaces and lasting tens of minutes to global winds resulting from solar heating of the Earth. The two major influences on the atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect).

Given a difference in barometric pressure between two air masses, a wind will arise between the two which tends to flow from the area of high pressure to the area of low pressure until the two air masses are at the same pressure, although these flows will be modified by the Coriolis effect in the extratropics.

Winds can be classified either by their scale, the kinds of forces which cause them (according to the atmospheric equations of motion), or the geographic regions in which they exist. There are global winds, such as the wind belts which exist between the atmospheric circulation cells. There are upper-level winds, such as the jet streams. There are synoptic-scale winds that result from pressure differences in surface air masses in the middle latitudes, and there are winds that come about as a consequence of geographic features such as the sea breeze. Mesoscale winds are those which act on a local scale, such as gust fronts. At the smallest scale are the microscale winds which blow on a scale of only tens to hundreds of metres and are essentially unpredictable, such as dust devils and microbursts.

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Answer 3

When a part of the earth heats, hot air at this point moves upwards. As the hot air moves upwards colder air from another area "runs" to take it's place. This is wind.. In northern hemisphere wind blows mostly from the north-west and at southern hemisphere from the south-east, because of the earths movement. Generally wind from the cold poles tends to move to the hot equator.

Answer 4

the wind can create new piles of sand in the desert by blowing sand across the ground and it can knock hosue into the sea by blowing the sea onto the cliffs and pull down trees blow, caravans over which can change what the earth looks like really big gusts of winds are hurricanes or tornados

Answer 5

umm... Wind is simply moving air. It moves along the surface of the Earth due to the influence of what we call CORIOLIS EFFECT or the DEFLECTION OF WIND due to the EARTH'S ROTATION. It was proposed by Gaspard Coriolis, yadda yadda yadda, etc. etc. etc.

Answer 6

when the air ( the gas form of O2, N2, etc) moves from high pressured place to low pressured area