Intro to Acoustics Quiz

________________________ is the human brain’s interpretation of frequency.

• Pitch

• Volume

• Tone

• Rhythm

Sound waves are measured in ______________________, or the number of vibrations per second.

• Hertz

• Decibels

• Watts

• Amperes

A vibrating object’s __________ primarily determines the pitch of a sound.

• size

• frequency

• color

• weight

As air molecules vibrate, they bump into each other, creating __________________________.

• Sound waves

• Light waves

• Heat waves

• Magnetic waves

__________ is a form of energy created by vibrations that travel in waves through matter and can be heard.

• Sound

• Light

• Heat

• Electricity

When an object vibrates, it also causes the surrounding __________________ to vibrate.

• Air molecules

• Water molecules

• Light waves

• Electric fields

The Hertz measurement for a sound is its ______________________.

• frequency

• amplitude

• wavelength

• velocity

When the vibrations reach the middle ear, they hit the __________, a paper-thin membrane that vibrates.

• ear drum

• cochlea

• auditory nerve

• ossicles

Pitch can be changed by adjusting the __________ of an object.

• tension

• color

• weight

• temperature

Electrical nerve impulses travel from the cochlea to the brain through the ______________________ and are experienced as sound.

• auditory nerve

• optic nerve

• spinal cord

• vagus nerve