Shakers and Bakers

A presentation by Michael Nottenkamper

•We are building a custom gondola to fit a recording microphone and a barometer to record pressure and to correlate to altitude.

Experiment

•We believe that the air pressure will affect the pressure/amplitude of a transmitted sound wave. Reduced pressure would then result in reduced amplitude of a transmitted sound wave.

Hypothesis

Procedure

•Record barometric pressure and correlated to altitude using Vernier Lab Pro software

•Simultaneously recorded a 5000 hz pulsed frequency produced from a small metronome exactly one inch from the microphone.

•Analyzed the pressure/amplitude of the sound waves using Vernier pressure analysis

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Row 1 Row 2 Row 3 Row 40

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Column 1Column 2Column 3

Altitude Data

Sound Pressure data

● There were no significant changes in the sound pressure changes. The microphone did not pic up the metronome but was able to pick up human whistling.

Conclusion/thanks

•Thank you to my mentors and teacher for all the support thank you for letting me participate, is there any questions?