Why does the wind blow?

Question

Why does the wind blow?

Answer 1

The Earth's atmospheric pressure varries at different places and times. Wind is simply caused by the movement of air from areas of higher pressure to areas of lower pressure.  The greater the difference in pressure, the faster the wind blows.  Some detailed weather maps (and TV weathermen, if they have time) show wind speed along with "isobars" (areas of equal air pressure) indicating the level of air pressure.  

Answer 2

During the day, the sun heats the air. Air increases in pressure and expands when heated, causing it to flow toward lower pressure regions. There's a great deal of detail beyond that, such as heat retained by large bodies of water and Coriolis effects, but sunlight is the ultimate source of the wind's energy.

Answer 3

kauz the viskosity & dampening is so lo, it kant stop the blo.

Answer 4

the movement of air particles i suppose. :)

Answer 5

differences in pressure

Answer 6

  It's caused by temperature and pressure differences in the atmosphere.

Answer 7

because of the moon and the ocean I guess.

Answer 8

This is due to difference in air pressure between two places due to different temperatures thus wind flows from an area with high pressure to the area with low pressure:-)

Answer 9

1.Pressure difference....The molecules in air generally flow from areas of higher pressure to areas of lower pressure. This flow of air is what we call wind

2.As the sun warms the earth’s surface, the atmosphere warms too. Some parts of the earth receive direct rays from the sun all year and are always warm. Other places receive indirect rays, so the climate is colder. Warm air, which weighs less than cool air, rises. Then cool air moves in and replaces the rising warm air. This movement of air is also makes the wind blow.

Answer 10

The way to think about it is that the wind doesn't blow, it's just that air moves from high pressure to lower pressure.

The atmosphere isn't uniform, so that there are a lot of areas with different pressure.  For example, hot air and cold air have different pressures (think about what happens when a balloon sits in the sun...it gets bigger because as the air inside the balloon heats up, the pressure grows.)

So if we have an area of high pressure near another area of low pressure, the air will want to move from high to low, and that air moving is the "wind".  It's kind of like a ball sitting on a tilted table.  If you put the ball at the top of the tilt, it will want to roll to the bottom.  That's what the air is doing...moving from the top (high pressure) to the bottom (low pressure).

Answer 11

Differences in the temperature of air masses cause cold air to rush in to replace rising warm air masses.