Trinity Life Science Chapter 12 Vocab
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Created by:
MrsRFisher on April 18, 2012
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20 terms
Terms | Definitions |
|---|---|
 compression wave | Wave that the particles move backwards and forwards in the same direction as the energy transfer |
| loudness | the human perception of how much energy a sound wave carries |
| amplitude | in a compression wave, the degree to which particles are spread out in ares of compression and rarefaction |
| decibel scale | a calibrated set of values used to judge the loudness of a sound, based on powers of 10 |
| pitch | the measure of how high or low a sound is, base upon its frequency |
| wavelength | the distance between any two crest or troughs on a wave |
| rarefaction | a part in a compression wave where the particles are spread apart |
| compression | a part in a compression wave where the particles are crowded closely together |
| pitch | the measure of how high or low a sound is, based upon its frequency |
| external ear | made up of folds of cartilage and skin, adjusts sound waves |
| auditory canal | part of your ear that collects sound waves from the external ear and passes them to the middle ear, adjusts sound waves |
| tympanic membrane | a thin layer of skin that vibrates when sound waves hit it |
| malleus | passes vibrations from the tympanic membrane to the incus |
| incus | passes vibrations from the malleus to the stapes |
| stapes | passes vibrations from the incus to the oval window |
| cochlea | a coiled, fluid-filled tube in the inner ear through which sound waves trigger nerve impulses |
| eustachian tube | A narrow tube between the middle ear and the throat that serves to equalize pressure on both sides of the eardrum |
| conductive hearing loss | caused by a build up of fluid in the middle ear inhibiting the ability of the tympanic membrane to vibrate properly |
| echo | a reflected sound wave |
| cartilage | a strong, flexible tissue made of collagen that gives shape to parts of your body |
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