By fox21, Updated
This storyboard does not have a description.
In this documentary we are going to talking about wind turbines, windmills are a older version of a turbines.
On weather charts there are wind symbols they point in different directions e.g. North.
On the wind symbols there is a circle and a strate line an there are different amounts of dashes on the line connected to the circle.
Wind is moving air. As well as moving up and down, air (and water) currents also move sideways in different directions. This process is called advection.
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