Carolina Biological OSE – April 2024
 

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STEM

Sound Projects

Author Post
Lauren Angelone Lauren Angelone 4035 Points

Has anyone created a STEM project related to sound concepts?

Jessica Thomas Jessica Thomas 320 Points

I once had students try to design a soundproof box. I used a phone with the app Arduino Science Lab. It has a decibel meter in it. So just in case a school doesn't have sound meters (we didn't), it's a good substitute.

Matt Bobrowsky Matt Bobrowsky 6410 Points

Jessica, that sounds like a fun project.  What are the learning goals for this activity?  What are you hoping that students will take away from it?

BTW, there are a number of free decibel meter apps available.

Oh, I just thought of a quick extension, as long as they've got their decibel meters handy:  Have them see how the sound intensity level various with distance from the source.  Does it depend on the intensity level of the source?  Do the measurements agree with what you'd expect theoretically, i.e., an inverse square law?

Matt Bobrowsky Matt Bobrowsky 6410 Points

Using a website or app that lets you play tones of different frequencies, find the resonant frequency for tubes of various lengths.  Determine how the wavelength of the resonant wave relates to the length of the tube.

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