Sound Waves

Sound Waves

Multiple Choice

Sound is a form of energy. How is it produced?

• by waiting

• by vibrating objects

Multiple Choice

Do sound waves travel through a medium?

• YES

• NO

Multiple Choice

It is the highness or lowness of sound or a musical note.

• Timbre

• Loudness

• Pitch

Multiple Choice

It is the unit used for frequency.

• Hertz (Hz)

• decibel (dB)

Multiple Choice

A _____ frequency sound has a higher pitch. A lower frequency sound has a _____ pitch.

• higher, higher

• lower, higher

• higher, lower

• lower, lower

Multiple Choice

The human ear can only sense within the frequency range of _____.

• 20 Hz to 20,000 Hz

• 1,000 Hz to 100, 000 Hz

Multiple Choice

Vibrational frequencies beyond 20,000 Hz is called _____.

• infrasonic frequencies

• ultrasonic frequencies

Multiple Choice

Extremely low frequencies are known as _____

• infrasonic frequencies

• ultrasonic frequencies

Multiple Choice

It determines the s loudness or volume of a sound wave.

• frequency

• amplitude

Multiple Choice

A high amplitude sound means _____ sound, and a low amplitude sound means _____ sound.

• softer, louder

• louder, softer

• louder, louder

• softer, softer

Multiple Choice

The unit of intensity level for sound _____.

• Hertz (Hz)

• decibel (dB)

Multiple Choice

On the decibel scale, an increase of 1 dB means that sound intensity is increased by a factor of _____.

• 2

• 5

• 10

• 100

Multiple Choice

It is a quality of a musical sound which is used for differentiating two sounds with the same frequency.

• Timbre

• Loudness

• Pitch

Multiple Choice

For sound to possess timbre, it must have _____ fundamental frequency and seven or more additional frequencies.

• one

• more than one

Multiple Choice

What do you call the additional frequencies?

• harmonics

• sound frequencies

Multiple Choice

It is a sound wave that is distorted and not pleasing to the senses.

• Music

• Noise