What Is Sound?

Objectives:

    1.    Explain how sound waves are produced.

    2.    Relate the pitch of sound to its properties.

    3.    Describe the movement of sound through air.

Resources:

 

Notes:

Wave Model of Sound:

All sound waves are caused by a vibration of molecules in a medium. Whether you speak and your vocal chords vibrate or you strum a guitar and the string vibrates, all sound is the result of a vibration of some sort of medium.  The interpretation of the frequency of sound is called pitch.  

Frequency and Pitch:

The pitch is how high or low a sound is.

(sol.sci.uop.edu/~jfalward/soundinterference/ flute.jpg)

Sound waves are longitudinal or compression waves and have the following characteristics.

(www.dilettantesdictionary.com/ defimages/rarefaction.gif)