1. Wind mill

2. There are two types of windmills in these instructions
There are two types of windmills in these instructions. You will build both and compare the effectiveness of them.
Windmill

3. If you’ve never used K’Nex before, read over these instructions to help you get started!
K’Nex Basic

4. Check out

7. You will need to make your own paper sails

8. Windmill A After you’ve built Windmill A, check out the box fan.
Place the fan 30 cm, 60 cm and 100 cm away from the windmill.
Using a stopwatch, time how long it takes for the windmill to start spinning constantly at each distance.
Compile this data into a table.
Windmill A

9. Time for windmill to start spinning
Distance from fan
Time for windmill to start spinning
30 cm
60 cm
100 cm
Windmill A

10. STOP! Test Windmill A before modifying it to become Windmill B!
You must test both Windmill A and Windmill B!
STOP!

11. You’ll need to make your own paper sails.

12. After you’ve modify your project to Windmill B, check out the box fan.
Place the fan 30 cm, 60 cm and 100 cm away from the windmill.
Using a stopwatch, time how long it takes for the windmill to start spinning constantly at each distance.
Compile this data into a table.
Windmill B

13. Time for windmill to start spinning
Distance from fan
Time for windmill to start spinning
30 cm
60 cm
100 cm
Windmill B

14. Windmill Research/Questions
In at least five (5) sentences, describe which windmill performed better, A or B.
Describe why you think this was the reason.
Windmill Research/Questions