r
^

Lab Report: The Amazing Balancing Yardstick

First Name: Anna
Age: 7
Experiment Title: The Amazing Balancing Yardstick
What was your hypothesis?: My hypothesis was that when I pushed the yardstick one way, it would push too far and fall down.
What materials did you use in your experiment? List them all.: A yardstick and my hands
What procedure was followed? Provide a brief description of the steps you followed during your experiment.: I took the two ends of the yardstick on my fingers, then I slowly pushed one finger toward the middle of the yardstick.
What were the results of your experiment?: As I slowly moved one hand toward the other, the yardstick did not fall off my fingers and stayed balanced. At the end, my fingers were in the middle and the yardstick did not fall off – it was completely balanced.
What is your conclusion after conducting the experiment? Was your hypothesis correct or incorrect? What did you learn?: I learned that when the friction was greater on the moving finger, it would push the stick over the other one. But when the friction was less on the pushing finger, that finger would slide under the yardstick.