What creates wind?

Answer 1

Wind is the flow of air. More generally, it is the flow of the gases which compose an atmosphere, since wind is not only an Earth based phenomenon.

Winds can be classified either by their scale, the kinds of forces which cause them, the geographic regions in which they exist, or their effect.

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 breezes. 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 meters and are essentially unpredictable, such as dust devils and microbursts.

Forces which drive wind or effect it are, the pressure gradient force, the coriolis force, bouyancy forces, and friction forces. When a difference in pressure exists between two adjacent air masses, then air tends to flow from the region of high pressure to the region of low pressure. On a rotating planet, flows will be acted apon by the Coriolis force, in regions sufficiently far from the equator and sufficiently high above the surface.

The two major driving factors of large scale global winds are the differential heating between the equator and the poles (difference in absorption of solar energy between these climate zones), and the rotation of the planet.

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

Answer 2

What Creates Wind

Answer 3

The answer is simple, differences in air pressure. The greater the pressure difference is over a small area, the larger the wind speed will be. If you look at a weather map, you often see lines surrounding an H and an L. The H is high pressure and the L is low pressure. These lines are called isobars. The isobar indicates a constant amount of pressure usually measured in millibars. The closer that the parallel lines are together, the stronger the wind speeds will be. To figure out the wind direction, the wind usually blows parallel to the isobar. Isobars surrounding an H will be blowing in a clockwise direction and counterclockwise for lines around an L.

Answer 4

1) Wind is created as a result of different pressures acting on a parcel of air.
2) Define Pressure?
Pressure is nothing but a force exerted over some area. The atmospheric pressure can be thought of as the weight of air above you pushing down on some area. Pressure is directly proportional to the density of air.
3) define Force?
Force is defined by Newton' law as F = m.a. where m is mass and a is acceleration. Wind is the result of various forces acting on a parcel of air.
4) What are these forces?
1) Pressure Gradient Force
The pressure changes over a gradient. The wind force accordingly vary.
2) Coriolis Force.
This force is exerted because of the rotation of Earth and acts on objects not rigidly attached to the earth surface.
3) Centripetal Force.
Acts inwards towards the axis of the earth.
4) Frictional Force
Frictional forces slows down the wind velocity.

Wind ( pressure or force ) is created as the resultant of the different forces exerted on a parcel of Air.

Answer 5

*Wind *

Wind is moving air. Warm air rises, and cool air comes in to take its place. This movement creates the winds around the globe. Wind is caused by different pressures in the atmosphere. Since the Earth spins, the winds try to move to the right in the northern hemisphere, and to the left in the southern hemisphere. This is called the Coriolis Effect .

Prevailing winds are a series of belts around the globe that produce steadily blowing winds near the surface. Trade winds are steady and flow towards the equator. Jet streams are narrow zones of very strong winds in upper troposphere.

Winds move at different speeds and have different names based on the Beaufort Scale. This scale is shown by numbers from 0 to 12 which goes from calm air to breezes to strong winds or gales . Winds are also grouped by their direction. Easterly winds blow from east to west, while westerly winds blow from west to east.

The fastest recorded wind speed is 230 miles per hour and occurred in New Hampshire in 1934. Although, winds can get faster in tornadoes. The windiest place in the world is in Antarctica.

Answer 6

Very simple answer: uneven heating of the earths surface. An even simpler answer would be the sun. Both answers could also answer a question: what causes weather? Since your question was simple I think you wanted a simple answer and not some long winded (pun intended) explanation of air flow around the globe.

Answer 7

Hot & cool air causes diffrent air pressure & causes winds.

Answer 8

movement of air due to variation in temperature from one area to other creates wind.

Answer 9

the main factor is the uneven heating of the earths atmosphere but pressure temp. and the coriolis effect also are a cause

Answer 10

Temperature and pressure differences in the atmosphere that collide with eachother.
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