How to Make an Anemometer
Equipment:
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Method:
1. Cut all 3 milk bottles or cartons in half. How many halves do you now have?
2. Paint 4 of the halves you now have or decorate so they can be distinguished from each other when measuring wind speed. Preferable make sure the one you did not paint is the bottom of a bottle or carton.
3. Recycle 1 of the halves.
*You should now have 1 plain half and 4 decorated milk carton or bottle halves.
2. Paint 4 of the halves you now have or decorate so they can be distinguished from each other when measuring wind speed. Preferable make sure the one you did not paint is the bottom of a bottle or carton.
3. Recycle 1 of the halves.
*You should now have 1 plain half and 4 decorated milk carton or bottle halves.
4. With the plain milk bottle (the half that is...) pierce a hole, using the skewer or scissors, the the middle of the bottom.
5. Push the skewer all the way through until it reaches the bottom. So, about half of the skewer will be in the milk carton or bottle and the other half will be sticking out the top.
6. Make a hole in the middle of the milk bottle top. Then push the skewer which is attached to the milk bottle through the bottle top. Make sure the milk top can spin and isn't too loose or tight.
5. Push the skewer all the way through until it reaches the bottom. So, about half of the skewer will be in the milk carton or bottle and the other half will be sticking out the top.
6. Make a hole in the middle of the milk bottle top. Then push the skewer which is attached to the milk bottle through the bottle top. Make sure the milk top can spin and isn't too loose or tight.
7. With the remaining 2 skewers, cross them over and tape to the top of the bottle top.
8. You now have 4 exposed ends of skewers.
8. You now have 4 exposed ends of skewers.
9. Tape the painted halves of the milk bottle or carton and attach to the ends of the skewers. One bottle half for each end.
10. When you tape them, make sure the open each end of the bottle or carton are facing the same way. This will ensure an accurate measurement can be made. Refer to picture.
10. When you tape them, make sure the open each end of the bottle or carton are facing the same way. This will ensure an accurate measurement can be made. Refer to picture.
11. Make sure your anemometer can spin around freely by blowing on it.
12. You now have an anemometer to find out how fast the wind is blowing. You can measure the wind speed by counting how many times one of the coloured halves does a full circle in one minute. Take it outside and either secure it in the ground by gently pressing into soil or tape it to somewhere outside so it doesn't blow away!
12. You now have an anemometer to find out how fast the wind is blowing. You can measure the wind speed by counting how many times one of the coloured halves does a full circle in one minute. Take it outside and either secure it in the ground by gently pressing into soil or tape it to somewhere outside so it doesn't blow away!