Waves, waves, and more waves. Here, class members look at the many types and characteristics of energy waves including transverse, longitudinal, standing, seismic, p-waves, s-waves, and l-waves. 

Here is a scientific presentation of earthquakes. The elastic rebound theory is explained, as well as the different types of waves and how they are measured. Just a note: Slide number 15 has a diagram that is upside down. Enable editing...