To understand how the ear functions, we must first know what sound is and how it travels. Sound is the compression and rarefaction of the air molecules, caused by the vibration of a solid, liquid, or gas. Every wave has two characteristics that define a sound and that is amplitude and a frequency. A frequency is the amount of waves cycles that pass a given area per second, and this is what gives sound it unique tone. Amplitude is the height of each wavelength and that determines how loud a noise is. Since everything in the universe has its own frequency, (wave pattern)

As the sound waves progress down the auditory canal they travel into a new region of the ear called the middle ear. Here in the middle ear the waves hit a barrier called the tympanic membrane, also known to most of us as the eardrum. Beyond the eardrum lie three tiny bones, collectively called the auditory ossicles, or individually as the hammer (malleus), anvil (incus), and stirrup(stapes). These tiny bones (all of which can fit in your index finger transmit vibrations between the eardrum and inner ear. Specifically, the malleus attaches to the eardrum, and when the eardrum vibrates the malleus vibrates in unison. The malleus causes the incus to vibrate, and the incus passes the movement on the stapes. As these bones jump in jive they move fluid in the inner ear, which stimulates the hearing receptors. The middle ear serves the ear as being an amplifier. It takes a sound wave from a relatively large

Some common words found in the essay are:
, inner ear, sound waves, middle ear, inner ear inner, region inner ear, region inner, ear inner ear, tiny bones, human ear, external auditory, outer ear, ear consists, ear inner,
Approximate Word count = 610
Approximate Pages = 2 (250 words per page double spaced)