Activity time: 25 minutes
Materials for Activity
- Leader Resource 1, How to Make an Anemometer
- Five 3 oz. plastic or waxed paper cups
- Two plastic soda straws
- A new pencil with unused eraser head
- Single-hole paper punch
- Scissors (including left handed scissors)
- One push-pin
- Permanent magic marker
Preparation for Activity
- Print Leader Resource 1, How to Make an Anemometer.
- Obtain supplies.
- Make a practice anemometer so you will be comfortable leading the activity.
Description of Activity
The wind that powers a kite or a sailboat can also turn the blades of a windmill to do jobs such as pumping water or grinding grain to make flour. Today, people are beginning to use windmills to generate electricity; these windmills are called wind turbines. To be useful, a wind turbine must be located in a place where there is going to be a lot of strong wind. Scientists measure the speed of the wind with an anemometer.
We are going to make anemometers today.
Using the leader resource as a guide, help the group follow the instructions to make an anemometer.
Once it is ready, take it outside, hold it in front of you. Looking at the X on the bottom of one cup, count the number of times that one cup makes a revolution in 10 seconds.
If it’s not windy, blow on it, as hard as you can, asking someone else to see who can make it revolve the fastest.