We made an anemometer, a simple device used to determine wind speed. Ours can simply tell us whether the wind is faster or slower than our last reading.
4 small paper cups
1 larger paper or plastic up
a pencil with an eraser end
a push pin
We had all the supplies needed to make this project on hand.
Steps To Make a Simple Anemometer
- Mark one of the small cups so that you can identify the start/end of a rotation. We used stickers.
- Tape the end of one straw to the back of a small paper cup and to the end of another cup turned in the opposite direction as seen above.
- Repeat step one with the second straw and set of cups.
- Now, crisscross the straws in their centers and tape (what we did) or staple them together. Be sure the cups are facing the same direction.
- Insert a push pin through the intersection of the straws and secure to the eraser.
- Cup hole just large enough to slip the writing end of the pencil through and insert the pencil.
- Secure the large cup to something with enough weight to keep the device upright.
- You may have to make adjustments to get it to spin easily.
We've had rain most of the week, so we've had to wait for a nice day. Little J initially set the anemometer on our deck, but there was not enough wind to make it spin, so he tried the front stairs. Perfect.
On line resourcesBrain Pop
Books/MagazinesThe Kids Book of Weather Forecasting by Mark Breen and Kathleen Friedstad
Wind and Air Pressure by Alan Rodgers and Angella Streluk
Extreme Weather by H. Michael Mogil and Barbara G. Levine
Ask magazine March 2011
Linking to: The Sunday Showcase, Science Sunday, Fun Sparks