|Windmills (like a giant pinwheel) have been used to generate power since ancient times.
Windmills were used to grind wheat into flour and corn into cornmeal.
Windmills were used for: sawing wood, making oil, paper, spices, chalk and pottery.
Today, giant windmills sit atop windy hillsides in great numbers like an army of pinwheels and are used to generate electricity.
Windmills are still used in areas that are far from a city, where the people have to generate their own power.
Windmills were used by the romans - their windmills had sails.
Windmills with sails spread all over Europe and eventually to America.
The force of the wind can make electricity. Giant windmills - with blades that reach out 200 feet, need a lot of wind to make them turn.
How do you know if you have enough wind to turn a windmill?
You can make your own ANEMOMETER with four small paper cups, two straws, a dowel or a pencil and a nice long pin. Be sure your vertical support is long enough.
When you poke your pin through the two straws, be sure to "roll" you pin around a little to enlarge the hole, this helps your anemometer to spin freely. Now, blow as hard as you can into one of the four paper cups and watch your anemometer spin. If you have a good windy day, you can stand outside and let the wind do the work.
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