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#1 Air Moving

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Wind is air moving around. Some winds can move as fast a racing car, over 100 miles per . Winds can travel around the world. Wind can make you feel cold because you lose heat from your body when it is windy. Weather forecasters need know the speed and direction of the wind. The strength of wind is measured using the Beaufort scale from wind force 0 when there is no wind, to wind force 12 which can damage houses and buildings and is called hurricane force.

 
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