Tuesday, Feb 24, 2009

Handed back and went over SHM test

Reviewed characteristics of waves.

Showed oscilloscope demo with frequency generator. Long wavelengths produce low pitch, low frequency sounds. Short wavelengths produce high frequency, high pitch sounds. Showed the same with the pull-a-tune. The longer bar produces a longer wavelength wave and a lower note.

Students did slinky lab in hallway and also used the Vernier equipment to measure the speed of sound in air using the singing rods.

Handed out RA 18.1 due tomorrow.