Wind is the movement of air. Wind begins as the sun heats the land. Then, the land warms the air above it. The warm air rises and cold air moves in to replace the warm air. This replacement of warm air with cold air creates an air flow that we call wind.
The speed of the wind depends upon the pressure of the air. Winds move from areas of high pressure to areas of low pressure. Areas of low pressure usually bring windy weather and areas of high pressure usually bring calm weather. An instrument called a barometer measures the air pressure. Check outside today and see what the wind is doing in your neighborhood.
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