Animation features a gridded sphere that shows a seismic station recording 10 different earthquakes that are widely scattered. [1:22]

This video segment adapted from NOVA uses historical illustrations, photographs, and animations to explain how seismographs work, the difference between P and S waves, and the Richter scale.

Learn about the anatomy of a tsunami in this video segment from Nature. Essay, discussion questions, and links to related information included. [1:19]

Animation illustrates that seismic waves traveling away from an earthquake occur everywhere, not just at seismic stations. [0:21]

Animation shows the buildup of stress along the margin of two stuck plates that are trying to slide past one another deforming rock. [33]

Explains why S-waves will only travel in solids.

Animation illustrates how seismic stations at varying distances from a large earthquake have signature seismograms. [0:31]

This animation uses a gridded sphere to show a single station recording five earthquakes equal distance away. [0:44]

Animation explores how 3 buildings engineered equally on different bedrock will react to an earthquake. [1:25]

In this animation, Dr. Geophysics compares seismic waves to ripples in water and helps explain 4 significant differences. [1:48]

Seismic waves travel through the earth to a single seismic station. Scale and movement of the seismic station are greatly exaggerated to depict the relative motion recorded by the seismogram as P, S, and surface waves arrive. [0:50]

Video lecture explores S-waves and P-waves. [8:38]

Explains how any type of wave can be refracted, and how this applies to seismic waves and to our understanding of the Earth's structure. [9:21]

See a cow and a tree in this narrated cartoon for fun and to emphasize that seismic waves traveling away from an earthquake occur everywhere, not just at seismic stations. [1:31]

Video lecture on wave motions and speeds of three fundamental kinds of seismic waves: Primary (P = pressure) waves; Secondary (S = shear); and Surface waves. [3:10]

See how travel-time curves are created. [2:52]

See how a building responds to seismic waves. [2:37]

A cross section of the shallow crust in the Basin & Range. The earthquake produces seismic waves that bump an array of seismic stations. [0:30]

How fast does sound travel through the rocks? And how does seismic velocity vary through different depths? See how scientists measure individual pieces of seafloor samples to get a better understanding of how the cores are related to...

Animation demonstrates how seismic waves migrate away from an earthquake. [0:08]