What are the properties of

sound?Chapter 12: Lesson 2:

Play a guitar.

What do you hear?

Is a type of energy we hear.

Sound

Moves quickly back and forth.

Vibrates

Compression

Rarefaction

Sound Waves

Vibrations that move through matter

Direction of sound

Direction of energy

Sound waves moves in the same direction the energy is

moving in.

Longitudinal Waves

Waves that move in a different direction.

Transverse Waves

Sounds travel through 3 media.

- Sound travels through the solid the fastest(energy passed through closely packed particles)

- Sound travels through the gases the slowest.

When you are TALKING the sound waves will look like this

When you are SCREAMING the sound waves will look like this

When you are WHISPERING the sound waves will look like this

Amplitude

How dense is the air during compressions and rarefactions.

Units:Decibels (dB)