Summer School Physical Science - CH 12 - Section II Quiz

What is the way the brain perceives the intensity of a sound?

• loudness

• eardrum

• pitch

• intensity

What do you call the change in pitch of a sound caused by motion of either the sound source or receiver?

• ultrasonic waves

• loudness

• cochlea

• Doppler effect

What do you call the highness or lowness of a sound?

• frequency

• loudness

• pitch

• acoustics

What do you call the amount of sound energy that flows through a given area in a given time?

• intensity

• frequency

• pitch

• echo

What do you call sounds with frequencies above 20,000 Hz?

• echolocation

• ultrasonic waves

• overtones

• music

Increasing the frequency of a sound wave will change the __________ of a sound.

• loudness

• intensity

• pitch

The pitch of the siren on a rapidly approaching fire truck will _______________.

• increase

• decrease

• remain the same

We cannot hear the sounds made by some heavy machinery because the frequencies are the ___________ range.

• infrasonic

• ultrasonic

• Doppler

The longer the _____________  the ______________ the frequency.

• wavelength, lower
• wavelength, higher
• amplitude, lower
• amplitude, higher

The units for frequency are measured in _____________.

• hertz
• seconds
• m/s
• grams