Sound EnergyCan you hear it?

Samuel DuPont 2009

Review – 5 Forms of Energy? Light Heat Sound

Electrical Motion

Samuel DuPont 2009

What is Sound?

Sound is caused by motion of air Vibrations

The air moves in waves Sound Waves

Similar to “Energy of Motion” Moving air

Samuel DuPont 2009

Vibrations and Pitch

A Sound Wave Length of the Wave (Wavelength)▪ Pitch

Amplitude▪ How loud it is

Samuel DuPont 2009

Vibrations and Pitch

Wavelength determines Pitch

Low Pitch (Bass) High Pitch (Treble)

Samuel DuPont 2009

When we combine all the sounds together…

We get a full sound wave

Samuel DuPont 2009

How do we make sound?

We make Vibrations Smack our hands together Hit the desk

Samuel DuPont 2009

Lets Experiment!

Vibrating Rulers Shorter makes higher pitch

Rubber bands Stretching makes higher pitch

Acoustic Guitar

Samuel DuPont 2009