Observation of Sound Waves Putting Out Candle


First Name: Anna
Age: 7
Experiment Title: Observation of Sound Waves Putting Out Candle
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 discover if sound waves can put out a burning candle.
What was your hypothesis?: My hypothesis was that sound waves would put out the flame.
What materials did you use in your experiment? List them all.: 1. a candle
2. a lighter
3. an empty paper towel roll
4. an empty toilet paper roll
5. metal cup
6. plastic wrap
What procedure was followed? Provide a brief description of the steps you followed during your experiment.: First, I used the plastic wrap to wrap the holes of the paper towel roll and toilet paper roll, both sides. Second, my grandma lit the flame. Third, I yelled (or screamed) into one of the covered ends of the paper towel roll. Then I did the same steps with the toilet paper roll. Then I screamed into the metal cup.
What were the results of your experiment?: None of those three things put out the candle. But the metal cup made the flame almost get put out.
What is your conclusion after conducting the experiment? Was your hypothesis correct or incorrect? What did you learn?: My conclusion was that my hypothesis was incorrect, though the metal cup almost worked. I learned that it’s hard to put out a candle using your voice. With the metal cup, I think the sound waves were actually hitting the flame but maybe they weren’t loud enough or were a different kind of wave so it didn’t fully put it out. But maybe if my voice was a little louder it would have worked.