Mechanical Waves

Today we introduced mechanical waves:

Here is a website with animations of the different kids of mechanical waves:

Acoustics and Vibrations Animations, Daniel A. Russell, Pennsylvania State University

Here is the stuff about earthquakes:
Types of Seismic Waves (L. Braile, Purdue)
Seismic Waves (YouTube)


Homework: Ch. 13 (p.469) # #41, 42, 44. Remember tomorrow is a half day.