This week we continued our study of waves and sound. Students listened to various frequencies of sound (frequency is synonymous with pitch), to determine what range of frequencies they could hear. Through demonstrations, and videos the students learned about the doppler effect and some of its applications to the real world. I presented a demonstration on beats and beat frequencies. Using a mechanical frequency generator, we created a standing wave on a string in class. We were able to show the natural frequency all the way up to the 10th harmonic on the string. The students also liked the strobe light demonstration. The students were given one day to work on webassign in class, and on Friday the students completed the speed of sound lab, in which they determined the speed of sound using tuning forks and a closed pipe. Below are a few pictures of the students working on the lab.
Speed of Sound Lab: Wednesday 1/23 at the beginning of class
Webassign: Wednesday 1/23 at 11:59 pm
Upcoming Test Dates:
Simple Harmonic Motion, Waves, and Sound: 1/24
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