Musical Instruments and Sound

The three types of musical instruments are ______, wind, and percussion instruments.

• string

• brass

• electronic

• keyboard

Harmonics are related to the quality of sound because they:

• determine the loudness of sound

• affect the pitch of sound

• determine the quality or timbre of sound

• have no effect on sound quality

Frequency differences between two sound waves produce which phenomenon?

• Echoes

• Beats

• Resonance

• Doppler effect

Sound wave interactions, such as reflection, absorption, and interference, affect acoustics by:

• influencing how sound is transmitted, amplified, or diminished in a space.

• changing the color of the walls.

• increasing the temperature of the room.

• affecting the speed of light.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Fill in the blank: Noise is a ______ mixture of a large number of sound frequencies.

• random

• regular

• harmonic

• periodic

What is music?

• A) A random mixture of sound frequencies

• B) A mixture of sound frequencies with a pattern

• C) Silence

• D) A single frequency

Tags

NGSS.MS-PS4-1

Which of the following best describes how a musical sound is produced by a percussion instrument?

• By blowing air through it

• By plucking strings

• By striking the instrument

• By pressing keys

The frequency of sound produced by a percussion instrument depends on the ______ of the object.

• mass

• color

• temperature

• shape

To raise the pitch of a percussion instrument, you should:

• Increase the mass of the object

• Decrease the mass of the object

• Strike it harder

• Make it longer

How is musical sound produced in stringed instruments?

• By blowing air

• By plucking or bowing strings

• By striking with a hammer

• By shaking