The different types of earthquake waves are discussed and illustrated. Features geologist video clip.

This site offers a variety of everyday activities and everyday experiences in which waves or sound waves play a role.

Sound is defined and characterized as a wave consisting of oscillations in pressure of a medium. Includes graphics and links to further information.

This site has several lessons all about sound. It introduces sound, then covers major principles of waves and the wave equation. Each lesson has interactive activities to keep you interested, and there are even some test questions.

Sound! How does it work? All you need to know about it is found here through a series of Q&As. Educators will find useful lesson plans.

Link to nine major physics topics and dig deeper into the content. Find out about the work of scientists in each field and see example physical science experiments.