Flash Cards

MPMS Catch a Wave 2 Sound

Term Definition
amplitude Volume of a wave (height of a wave)
amplitude measured in decibels (dB)
frequency Pitch, high or low (length of a wave)
frequency measured in Hertz (Hz)
loudness (volume) Your perception of the energy of the sound
pitch The perceived frequency of sound
sound Vibrations that travel through air or another medium and can be heard when they reach a person’s or animal’s ear
vocal cords A pair of flaps on either side of the larynx that are responsible for the production of sound including speech
Hertz (Hz) Used to measure the frequency of sound (pitch)
Decibels (dB) Used to measure the amplitude of sound (loudness or volume).
Outer Ear The pinna, ear canal, and ear drum make up the outer ear
Middle Ear Has the smallest bones in the body: the hammer, anvil and stirrup
Inner Ear The cochlea is a snail-shaped tube that is lined with receptors (tiny hair cells that shake back and forth) that respond to sound

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