where does wind come from?

Question

loving the farting references! my fault for the wording of question duh! but its not the kind of wind i was actually wondering about...

Answer 1

Wind is the equalization of pressure difference between Hi & Lo regions in the atmosphere. The greater the pressure difference the greater the resultant wind speed.

Answer 2

Wind is caused by air flowing from high pressure to low pressure. Since the Earth is rotating, however, the air does not flow directly from high to low pressure, but it is deflected to the right (in the Northern Hemisphere; to the left in the Southern Hemisphere), so that the wind flows around the high and low pressure areas. This effect of the wind "feeling the Earth turn underneath it" is important for very large and long-lived pressure systems. For small, short-lived systems (such as in the cold outflow of a thunderstorm) the wind will flow directly from high pressure to low pressure.

The closer the high and low pressure areas are together, the stronger the "pressure gradient", and the stronger the winds. On weather maps, lines of constant pressure are drawn (as in the example, above) which are called "isobars". These isobars are usually labeled with their pressure value in millibars (mb). The closer these lines are together, the stronger the wind. The curvature of the isobars is also important to the wind speed. Given the same pressure gradient (isobar spacing), if they are curved anticyclonically (around the high pressure in the above example) the wind will be stronger. If the isobars are curved cyclonically (around the low pressure in the example above) the wind will be weaker.

Near the surface of the Earth, friction from the ground slows the wind down. During the day, when convective mixing is stirring up the lower atmosphere, this effect is minimized. At night, however, when convective mixing has stopped, the surface wind can slow considerably, or even stop altogether.

Wind can also be thought of one way that the atmosphere moves excess heat around. All wind is, directly or indirectly, helping to transport heat either away from the surface of the Earth, where sunlight causes an excess of energy buildup, or from warm regions (usually the tropics) to cooler regions (usually the higher latitudes). Extratropical cyclones accomplish much of this heat transport outside of the tropics, while in the tropics the trade winds, monsoons, and hurricanes transport much of the heat.

Answer 3

Simply put, wind is the motion of air molecules. Two concepts are central to understanding what causes wind: air and air pressure. Air comprises molecules of nitrogen (about 78 percent by volume), oxygen (about 21 percent by volume), water vapor (between 1 and 4 percent by volume near the surface of the earth) and other trace elements. Every time we breathe, the air we inhale is composed of about the same relative ratios of these molecules, and a cubic inch of air at ground level contains about 1020 molecules.

All of these air molecules are moving about very quickly, colliding readily with each other and any objects at ground level. Air pressure is defined as the amount of force that these molecules impart on a given area. In general, the more air molecules present, the greater the air pressure. Wind, in turn, is driven by what is called the pressure gradient force. Changes in air pressure over a specified horizontal distance cause air molecules from the region of relatively high air pressure to rush toward the area of low pressure. Such horizontal pressure differences of all scales generate the wind we experience.

Answer 4

Different gradients of pressure. The wind is driven by the pressure gradient force and the Coriolis effect. In the N hemosphere the Coriolis effect moves to the right in the S. hemosphere the Coriolis effcxt moves to the left.

Answer 5

For sure the winds was created by God. The movements of air that combines together cause the winds to change it's direction and status (light or strong).

Answer 6

It is moving air. It derives from pressure differences in local areas. It flows from high pressure air masses to low.

Answer 7

Changes in temperature and pressure are the most common causes.

http://en.wikipedia.org/wiki/Wind

Answer 8

it comes from the SKY
llol jk it comes from when high air pressure meets the low air pressure.

Answer 9

temperature differences can drive winds

Answer 10

i think its because of high and low pressure zones, but science prooves me wrong