Make a weather vane
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Weather vanes are simple instruments that show the direction of wind, but not the speed. When properly designed they have two sides around a central pivot point that are unequal in surface area, but equal in weight. One side catches more wind and swings around.

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Wind Engineering

Step 1

Weather vanes are simple instruments that show the direction of wind, but not the speed. When properly designed they have two sides around a central pivot point that are unequal in surface area, but equal in weight. One side catches more wind and swings around.

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Make a weather vane. Activities for Kids.