Understand how sound is transmitted through the ear and perceived by the brain in this reference page. Page includes content and an animation.

A discussion of refraction and its application to sound waves. Using analogies, graphics and real-life applications, this page and those that accompany it explain why and when sound waves bend.

Provides a simple explanation of how sound waves travel and gives a long list of facts about sound waves.

A reference page including content and animations on longitudinal waves. Understand how sound waves are produced from vibrations in guitar strings to produce longitudinal waves.

This resource explores how vibrating objects produce sound waves. The site contains information and an animation.

Extensive information about how waves behave in an elastic medium. Covers different types of waves, their characteristics and behavior, the anatomy of the ear, the speed of sound in different media, the parts of a wave, and wave phenomena.

Discusses the characteristics of sound waves and the conditions that affect the speed of sound.

Two wave graphs depicting a sine wave and relating the various characteristics (wavelength, amplitude, frequency, and period) of a wave to each other. The site includes an interactive JavaScript form in which the visitor enters one...

The physics tutorial illustrates and explains the distinction between transverse and longitudinal waves. Related links provided.

[Free Registration/Login may be required to access all resource tools.] This guide gives a detailed overview of mechanical waves and the characteristics of waves. Covers wave behavior, including types of interference, resonance, and the...

Information about the interference of sound and its causes. Well-illustrated and good explanations of the concepts; part of a large hyper-textbook on various physics concepts.

This list describes common misconceptions children have about sound and the scientific explanation for those ideas.

This resource explains how sound is characterized. It provides links to sound properties and their perception as well as properties of waves.

Explains what happens to a wave when it hits a fixed end or a free end.

This interactive activity from A Science Odyssey tracks the journey of a sound wave from the moment a musician sings into a microphone until his voice reaches the vibrating speakers of an AM Radio.

This site's entry is a discussion of diffraction and its application to acoustics and acoustical design. Exceptional illustrations and great discussion throughout.

At this site from the Nobel e-Museum, you can read about the scientific work of Lord Rayleigh (1842-1919 CE). This article includes information on his education and experiments with light and sound waves.

Online physics lab experiment in which students use resonating waves inside of a closed-end air column to determine the speed of sound. The form allows students to check their answers and receive immediate feedback.

Learn the difference between an echo and a reverberation on this reference page. Page includes an animation to show the difference.

A tutorial from a hypertext physics course book that discusses reverberation. Illustrated.

This lesson will discuss the differences between constructive and destructive wave interference. It is 1 of 2 in the series titled "Wave Interference."

This hypertext physics course tutorial on nonfocusing surfaces relates various design principles to good auditorium design. Illustrated.

This site from Architectural Acoustics and Lighting provides a discussion of various factors affecting the acoustics of a given room. Room dimensions, the wavelength of the sound wave, the physical characteristics of the walls, the...

Wikipedia offers information on the basics of ultrasound, "Sound or vibrations with frequencies too high to be audible by the human ear."