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Sound
Vocabulary words essential for the understanding of sound
9
Science
8th Grade
10/29/2013

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Term
doppler effect
Definition
An observed change in the frequency of a wave when the source of observer is moving away or towards the other.
Term
resonance
Definition
A phenomena that can occur when 2 objects vibrate at the same frequency that increases the amplitude and causes other objects to vibrate
Term
sound waves
Definition
A type of mechanical wave that travels through a medium.
Term
ultrasound
Definition
A type of sound wave that travels at a frequency greater than the human range of hearing. Used by organisms such as bats and porpoises to locate prey and obstacles.
Term
infrasound
Definition
A type of sound wave that travels at a frequency lower than the human range of hearing.
Term
pitch
Definition
A term that describes the frequency of a sound wave. A high pitch refers to a high frequency wave; a low pitch refers to a low frequency wave.
Term
decibel
Definition
The unit of measurement for the intensity of sound. (dB)
Term
acoustics
Definition
The study of sound waves
Term
Parts of the Human Ear (diagram and label with a description of what each part does)
Definition
earflap, ear canal, middle ear parts, simicircular canals, inner ear cochlea, outer ear, inner ear, middle ear.
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