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1.3.1 Good Vibrations MI (PLTW Biomed) (1)
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- Pennsylvania Real Estate Fundamentals
1.3.1 Good Vibrations MI (PLTW Biomed) (1)
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1.3.1 Good Vibrations MI (PLTW Biomed)Audiologist - ANS-A healthcare professional specializing in treatment of patients with hearing
loss and related disorders
Sound - ANS-Mechanical energy that is transmitted by longitudinal pressure waves in a medium
(such as water or air)
Outer Ear - ANS-The outer visibility portion of the ear that collects and directs sound waves
toward the tympanic membrane by way of a canal which extends inward through the temporal
bone
How does sound travel? - ANS-In waves
How is sound generated? - ANS-Vibrations
What are the two main characteristics of sound? - ANS-Pitch and intensity
Pitch - ANS-Determined by a sounds frequency
Frequency - ANS-How rapidly the sound waves vibrate each second
Measured in vibrations per second, or Hertz
What does it mean if there is a high frequency? - ANS-the higher the frequency of the sound,
the more frequently the waves vibrate, and the higher the sounds pitch is
Sound intensity - ANS-Determined by a sounds amplitude
Also known as loudness
Measured in decibels (dB)
Amplitude - ANS-The amount of energy in the wave
What happens if there is more energy in a sound wave? - ANS-The more energy the sound
wave has, the higher the amplitude, and the louder the sound seems
Decibel scale - ANS-Begins at 0 dB, which is the intensity of the sound that is least perceptible
by a normal human ear. 20dB is one hundred times louder than 0dB
At what decibel can hearing damage become a possibility? - ANS-Frequent or prolonged
exposure to sounds with intensities about 85 dB can damage hearing receptors and cause
permanent hearing loss
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