What is the Wind?
Wind is simply moving air which exerts a force in things making them move to the point of least resistance. That is why things designed for speed, in the air or in water, are often smooth and curved so that they are not slowed down by the force of the wind.

Why is it Important?
How hot or cold we feels depends on the strength of the wind. Air moving rapidly past our body causes it to lose heat quickly and this cooling power is known as the wind chill effect. This is important for walkers and climbers, sportsmen and sunbathers. In hot places you can't always feel whether you are getting burnt by the sun. In cold conditions it means that already low temperatures feel even colder speed up the potential for frostbite and hypothermia. And of course the speed and direction of the wind is crucial for sailors, pilots, and farmers planning their day's work. Extremely strong winds are very powerful and can cause much damage.