Read the Fine Print
Educational Use
Students play and record the “Mary Had a Little Lamb” song using musical instruments and analyze the intensity of the sound using free audio editing and recording software. Then they use hollow Styrofoam half-spheres as acoustic mirrors (devices that reflect and focus sound), determine the radius of curvature of the mirror and calculate its focal length. Students place a microphone at the acoustic mirror focal point, re-record their songs, and compare the sound intensity on plot spectrums generated from their recordings both with and without the acoustic mirrors. A worksheet and KWL chart are provided.
- Subject:
- Geometry
- Mathematics
- Physical Science
- Physics
- Material Type:
- Activity/Lab
- Provider:
- TeachEngineering
- Author:
- Nick Breen
- Steven C. Thedford
- Date Added:
- 02/07/2017