Physical Science Chapter 12: Sound

Vocabulary Words	Objective Questions
12-1  What is sound?	page 344
loudness pitch echo Doppler effect compression rarefaction decibel scale echolocation	What is sound?  How is it produced? Describe the speed of sound. What is the relationship between energy and amplitude? loudness and amplitude? Why are loud sound dangerous? When have you heard the Doppler effect? Who/What uses echolocation? What advantage do sound waves have over light waves? What can sound waves be used for?
12-2  Music	page 355
natural frequency resonance fundamental frequency overtone beats reverberation eardrum	What is the difference between noise and music? What determines an object's natural frequency How does resonance help amplify the sound of an instrument? What are the three basic kinds of instruments?  How do they produce sound? How do musicians use beats? How does disease, age, and loud sounds damage hearing? What sound are usually lost first by man?

Doppler Effect Animation

*Science and Society:  It's a Wrap!  page 366-367