Im typing this while im hearing the strong wind from the northeastern blow through the doors of my house.
Why can't we see wind?
What is it exactly?
2006-11-22 02:00:32 · 4 answers · asked by Anonymous in Environment
Wind is the movement of large amounts of air from one place to another.
When the Sun heats the earth, it heats unevenly, since water and land gain and lose heat at different rates; this will warm the air that is over those areas at different rates also, which creates pockets of warm and cold air all over the earth.
Since warm air rises, the warm air will rise and cooler air must move in to take its place; this is what creates wind!
2006-11-22 02:09:55 · answer #1 · answered by drumrb0y 5 · 0⤊ 0⤋
The atmosphere is composed of air which, in turn, is made up of tiny particles of different gases like nitrogen, hydrogen and oxygen. The Sun shines on our atmosphere all of the time. But, it heats the surface of the Earth unevenly, so that in some places it is warm while in other places it is cold. As air gets warmer, its particles spread out. This makes the air lighter, or less dense, so it rises. As air cools, it becomes heavier, or more dense, and sinks. As warm air rises, air from cooler areas flows in to take the place of the heated air. This process is called convection and causes air to move. The differential heating of the Earth's surface and the resulting convection is what causes wind on this planet. Wind circles the Earth and plays an important role in determining weather conditions.
Examples from Everyday Life
1. Hot air balloon: Air is heated by a gas flame below the balloon. The hot air inside is lighter or less dense than the cooler air outside the balloon. As the hot air rises, it carries the balloon upward. When the gas flame is turned down, the air cools and the balloon sinks back to the ground.
2. Sea breeze and land breeze: Coastal winds blow landward during the day and seaward at night. On a sunny day, the sand warms quickly. The warm air over the beach rises, and the cooler ocean air moves in to replace it, causing a sea breeze. At night the reverse effect occurs. A land breeze is generated by the relative differences in temperature caused by the more rapid loss of heat from the land than from the sea.
2006-11-22 10:10:04 · answer #2 · answered by Brite Tiger 6 · 0⤊ 0⤋
1. Its AIR! It's a gas!
2. It's blowing AIR
2006-11-22 10:08:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Wind
2006-11-22 10:08:55 · answer #4 · answered by Nikkers 6 · 0⤊ 0⤋