12. one point, from Lectures 12--14, involves definitions, examples, maybe a sketch or two.

Wave Vocabulary Define the following ten terms, incorporating an example into each definition, and using a picture if it helps: medium, longitudinal, frequency, period, wavelength, amplitude, constructive interference, standing wave, resonance, refraction. (.1 apiece)

Here is an example using a term I'm not asking you to do. Transverse: The medium oscillates perpendicular to the direction the wave propagates, as in water waves or a stadium wave or light waves. You only need one example. I could have drawn a little picture with this, too.

Revised September 25, 1997.