Add Yahoo as a preferred source to see more of our stories on Google. Have you ever wondered how fast the wind is blowing when gusty winds are in the forecast? Meteorologists use an anemometer, a ...

Anemometer is the instrument we use to measure wind speed. Use the hole punch to make one hole in the side of four of the paper cups (all roughly in the same place) and four equally-spaced holes ...

An anemometer is a tool used to measure wind speed. It has three or four cups attached to horizontal arms and when the wind blows, the cups rotate around. The stronger the wind blows, the faster the ...

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