Hi, everybody! Thanks so much for voting on our joke poll. Here is the favorite joke . . .
Science cat reads book about anti-gravity. Can't put it down!
We hope you have fun!
~Jordan and Nora
Science cat reads book about anti-gravity. Can't put it down!
We hope you have fun!
~Jordan and Nora
The Screaming Balloon
Question:
How does centripetal force and the shape of an object affect the sound it makes?
Hypothesis:
We think that the shape of an object and centripetal force affect the sound an object makes.
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Materials:
Regular sized clear balloons Large clear balloons (optional) Non-Helium blower Pennies Hex Nuts Marbles (optional) |
Our experiment in action!
Safety ProceduresThere are no Safety Procedures.
Do not pop the balloon, do not eat the materials. Watch it!
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Procedure:
Alternatives Try this experiment with large and small balloons. Do you get the same result? What about if you try it with different objects? (Dice, marbles, ect.) Special Needs: A quiet room to hear the "scream" |
Watch the procedure slideshow above!
Listen to the screaming sound above by clicking play.
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The Science Behind the Experiment
Newton’s first law of physics is “a body in motion stays in motion until a force acts upon it”. That is true for this experiment because the objects inside the balloon stay in motion. The object eventually will stop because of the pull of gravity and friction caused in the balloon.
Why does the hex nut make a sound and the penny doesn't? The answer is simple science. The hex nuts circle the inside of the balloon due to centripetal force. Centripetal force is the force that causes the hex nuts to move in a circular pattern.
The hex nut has something special about it that the penny doesn't. The hex nut has 6 flat sides while the penny has one smooth one. The flat edges of the hex nut allow it to vibrate or bounce along the inside wall of the balloon. The screaming sound is created by the sides of the hex nut bouncing or vibrating along the sides of the balloon.
Why does the hex nut make a sound and the penny doesn't? The answer is simple science. The hex nuts circle the inside of the balloon due to centripetal force. Centripetal force is the force that causes the hex nuts to move in a circular pattern.
The hex nut has something special about it that the penny doesn't. The hex nut has 6 flat sides while the penny has one smooth one. The flat edges of the hex nut allow it to vibrate or bounce along the inside wall of the balloon. The screaming sound is created by the sides of the hex nut bouncing or vibrating along the sides of the balloon.
Conclusion
Shape and centripetal force do affect the sound an object makes. The round penny has no sides to bounce off of, but the hex nut does. The hex nut vibration makes a sound.
About NoraNora is an 11-year old girl in 5th grade. She has Mrs.Luke this year as her teacher and she thinks that Mrs.Luke is awesome. Her favorite subjects are math and reading.
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About JordanWhy can't you trust atoms?* (Answer below) That is what Jordan does best. Science, humor, math. She loves to read and currently is writing a novel. She loves the snow.
*Answer: Because they make up everything! Hahahaha . . .
Watch our science related joke slideshow below! It is sure to give you a big laugh! |
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Vote for your favorite joke-- the results will be posted on March 10 of which one was voted the favorite!
