Sound

MorganMrs. Branin

5th Grade

What Makes Sound

Vibration- A back-and-forth motion.

Sound Waves-are vibrations that spread away from a vibrating object.

How Sound is Produced By Strings The violins body is

hollow and resonates sound.

The strings make a Pitch

How Sound Is Produced

Vibrating Air

Woodwinds Vibrating reed

Percussion Vibrating surface

Strings Vibrating

What Makes Sound

•Compression- The part of a sound wave when the molecules are crowded together

•Rarefaction- The part of the sound wave when the molecules are spread apart.

What Can Sound Go Through

• Solids

• Liquids

•Gases

Changing SoundPitch

Frequency Hertz

Volume- A measure of space a object takes up

Decibels Loudness Softness

Common Sounds

Telephone Car Music Fire Alarm Alarm Clock Microwave Sirens

Sound Bounces

Reflection- The bouncing of the sound wave off a surface

-Echo Absorption- The

disappearance of a sound wave into a surface