WHAT IS SOUND?
Sound is a type of this.
➡️ Energy
What type of motion creates vibrations?
Back-and-forth motion
True or False
Plants hold soil in place to prevent erosion.
True
Name the three states of matter that can carry sound.
Solids, liquids, gases
What causes sound in all musical instruments?
Vibration
Sound is created when something does this.
➡️ Vibrates
How does the strength of a vibration affect loudness?
Stronger vibrations create louder sounds
A large natural stream of fresh water flowing along a path, usually into the sea
A river
Which state of matter allows sound to travel the slowest and why?
Gases; particles are farther apart
What vibrates inside a trombone to produce sound?
The air column
We hear sound when vibrations reach this part of the body.
Ears
How does vibration speed relate to pitch?
Faster vibrations produce higher pitch
Virginia's natural forests are used for what resource?
lumber
How does particle spacing affect sound transmission?
Closer particles transfer vibrations faster
How does changing length of a wind instrument affect the pitch of a sound?
Shorter the tube the higher the pitch. The longer the tube the lower the pitch.
True or False: You can see sound with your eyes.
False
Why do smaller instruments often produce higher sounds than larger ones?
They vibrate faster
Water that is found beneath the earths surface
Groundwater
Why can you hear sounds through a wall but not through empty space?
Walls have particles; space does not
Why does longer tubing create lower pitches in brass instruments?
Vibrations move more slowly
Sound travels as this.
Waves
Explain how both pitch and volume are controlled by vibrations.
Speed affects pitch; strength affects loudness
True or False
Coal is used for electricity and is a source of energy
True
Compare sound travel in water versus air.
Sound travels faster in water because particles are closer
Explain how a brass instrument demonstrates both sound production and sound travel.
Air vibrates to produce sound waves that travel through air to the ear