Weather experiment – make your own anemometer

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RALEIGH, N.C. (WNCN) — Today’s science lesson and experiment focuses on the wind. The wind is caused by differences in pressure. The greater the pressure difference, the faster the wind blows. To measure wind speed, meteorologists use an anemometer. You can make your own at home with materials you likely already have, and it is pretty easy to assemble.

Items you’ll need:
4 cupcake lines
4 thumbtacks
2 cardboard strips
1 pencil
1 spool (can be empty)
1 needle or pin

Take the pencil and place it into the opening on the spool. Place the two cardboard strips in an X pattern and use the pin to go through the two strips and into the eraser of the pencil. Take one cupcake liner and one thumbtack to place on one end of the X of the cardboard strips all the way around (totaling to four).

Once it is together, give your anemometer a blow to make sure it spins and is working properly. If it spins, you are good to go! This instrument is not too heavy, so it may not be best to place outside to use, but you could always secure it to something, or just use it around the house for fun when your heat or air kicks on!

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