34 Multiple choice questions
- For the Doppler equation, any motion of one toward the other is ____, and any motion of one away from the other is _____.
- term for two notes with one twice the frequency of the other; heard as the same note at different levels
- three factors that affect the speed of sound
- term for the human perception of intensity
- term for a molecule's original position
- term for the undulating variation in displacement of molecules along the path of a sound wave
- term for the intensity detectable by a person with normal hearing
- term for the sound heard when a shock wave sweeps over listeners at ground level
- term for our perception of audible frequency
- term for a violent disturbance traveling outward, that occurs when an object breaks the sound barrier
- True or False: Sound is a periodic wave train.
ear is a(n) _____ ____ of sound intensity; that is, the perceived
loudness of a sound is not a simple linear function of intensity
measured in W / meters squared
- When passed through a liquid, ultrasound at high intensity causes _____, the formation of cavities.
- term for the average distance of travel between collisions
- term for the range of frequencies or wavelengths that can be heard
- term for a sound of definite pitch produced by a singing voice or a musical instrument
- term for a versatile procedure that can find tumors and gallstones or show a developing child within the womb
studies have shown that perceived loudness is determined, not by
absolute intensity, but by the ___ __ _____ of absolute intensity.
- term for sonic waves with frequencies above 20,000 Hz, the upper limit of the audio range
- term for the movement of longitudinal waves through an elastic medium, whether solid, liquid, or gas
- Loudness is a measure of ____ ____; specifically, a relationship of one sound to a barely audible sound.
- the just noticeable difference, or the smallest difference a human ear can detect
gas particles are not held together by elastic force, they form a(n)
____ ____ that resists any departure from uniform pressure.
- True or False: Sound travels in a longitudinal wave.
- another term for sound waves
- term for any shift in the wavelength and frequency of waves due to motion of the source (or to motion of the observer)
- term for sonic waves below 20 Hz, the lower limit of audible sound
- True or False: No sound can travel through a vacuum.
for the amount of energy flowing per unit time through a unit area at
right angles to wave motion; quantity that represents the strength of
- oen common measure of loudness
- term for a toothed disk that demonstrates pitch as it spins on its axis
- numbers used to related the speed of jets to the speed of sound
- term for a speed past that of sound; breaking the sound barrier
- term for maximum displacement of a wave