what is wind and what causes it?

Answer 1

WInd is air moving. It is caused by masses of air of different pressures attempting to come to equilibrium: high pressure air moves toward low pressure air. The eye of hurricanes has extremely low air pressure, causing an in-rush of air that is extremely strong.

Answer 2

well, wind is air that is moving.

A better explanation, I know....

Wind is created by: warm air and cool air, the earths rotation, day and night.

When the earth turns in orbit, from night time to day time, the air that cooled off at night warms up when the sun shines through it, the warm air goes up, and the cool air goes down, making wind.
Also the spinning of the earth makes wind too, because the air around the earth dosent spin with the earth, so this makes the air around the earth swirl around - wind.
Last, the oceans of the world cool air off, that's why there is always a breeze at the beach.

Answer 3

Wind is the rough 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 meters and are essentially unpredictable, such as dust devils and microbursts.

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

Answer 4

Wind is the rough 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 meters and are essentially unpredictable, such as dust devils and microbursts.

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

Answer 5

Wind is simply the movement of air molecules from one location to another. It is caused by differences in the heat of a surface. The sun heats earth's crust, but this heating process is uneven. As hot air rises, cooler air takes its place and what you have is wind.

Answer 6

The above answers are probably correct, though I just wanted to add that Calvin's dad in the "Calvin & Hobbes" comics attributes the wind to "trees sneezing." In the next panel, Calvin comments to Hobbes while walking in some wind, "The trees are really sneezing today."
HA!

Answer 7

the rotation of earth plus temperature differences... when the air is cold it goes down and when its hot it goes up, that causes a totation which creates wind, stronger winds well thats another story....

Answer 8

wind is caused by all the wind mills in holland.

Answer 9

changes in barometric pressure cause air to move from high to low pressure areas in an attempt to equalize

Answer 10

rotation of the earth & heating of the earth's surface