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Determine Which Technique of Moving a String Makes a Squeaking Noise on a Plastic Cup

First Name: Anna
Age: 7
Experiment Title: Determine Which Technique of Moving a String Makes a Squeaking Noise on a Plastic Cup
What was the purpose of your experiment? Provide a brief description of what you were hoping to learn, discover, or study.: The purpose of my experiment was to see which technique of moving a sting makes a squeaking on a plastic cup.
What was your hypothesis?: My hypothesis was that the string could make a squeaking noise.
What materials did you use in your experiment? List them all.: The materials we used were:1. string
2. paper clip
3. solo cup
4. scissors
What procedure was followed? Provide a brief description of the steps you followed during your experiment.: With the scissors, we poked a hole in the bottom of the solo cup. Then we tied one end of the string around the paper clip, and then entered the other side through the hold at the bottom of the solo cup, so that the paper clip was keeping it in place. Then we rubbed our fingers along the string and tried to make noise.
What were the results of your experiment?: The results of my experiment were that the string was able to make a squeaking noise.
What is your conclusion after conducting the experiment? Was your hypothesis correct or incorrect? What did you learn?: My hypothesis was correct. I think it worked because us rubbing on the string made friction on the string. When there was no cup attached to the string, we couldn’t hear anything. The cup acted as a sound box to amplify the sound created by the vibration of the string.