The Science of Sound Review

Select all that are true about sound:

• All sounds are caused by vibrations.

• Vibrations move in random patterns.

• Sound travel in waves.

• Vibrations need a medium in which to travel to be heard.

When or where might you not hear sound?

• Under water

• Underground

• In space

• In a vacuum

What are the three acoustic vibration classes?

• air

• water

• percussive

• string

What are the ways string vibration is produced?

How do the instruments in the Brass Family produce sound?

• reeds: air, single, double

• striking, shaking, scraping, rubbing

• plucking, strumming, bowing

• the buzzing of a musician's lips on a cup-shaped mouthpiece

How do the instruments in the Woodwind Family produce sound?

• reeds: air, single, double

• striking, shaking, scraping, rubbing

• plucking, strumming, bowing

• the buzzing of a musician's lips on a cup-shaped mouthpiece

What are the ways percussive vibration is produced?

There are different kinds of sounds. It is important to know the difference between them.

• TRUE

• FALSE

_____ is a mixture of sound waves that do not always sound pleasing together and has no definite timbre (TAHM-ber) and no identifiable pitch. Sometimes it can be pleasant, like

• Music

• Tone

• Noise

• Vibration

A tone has a certain ___ or frequency. It is a single note.