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Edelman
chapter 2
27
Physics
Undergraduate 1
05/28/2011

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Term
acoustic propagation properties
Definition
effecet of the medium upon the sound wave
Term
biologic effects
Definition
effect of the sound wave upon the biologic tissue through which it passes
Term
sound travels in a __________line?
Definition
straight
Term
sound waves are ________________waves.
Definition
longitudinal or acoustic
Term
three acoustic variables are _______?
Definition
pressure, density, distance
Term
define pressure
Definition
concentration of force in and area
Term
define density
Definition
concentration of mass in a volume
Term
define distance
Definition
measure of particle motion
Term
longitudinal wave
Definition
particles move in the same direction that the wave propagates
Term
transverse wave
Definition
particles move in a perpendicular direction that the wave propagates
Term
in-phase waves
Definition
when peaks and troughs occur at the same time and same location
Term
out-of-phase waves
Definition
peaks and troughs occur at different times and locations
Term
interference
Definition
multiple waves combine at a particular point at same time and lose their individual characteristics
Term
constructive interference
Definition
in-phase waves interference where the resulting wave has greater amplitude than either of its components
Term
destructive wave
Definition
out-of-phase interference forming a single wave of lesser amplitude than either of its components.
Term
what do waves transfer from one location to another?
Definition
energy
Term
sound waves are a series of _____?
Definition
compressions and rarefactions
Term
which of the following terms does not belong with the others: compression, density, pressure, or spacing
Definition
spacing
Term
variations in all of the following identify specific waves as acoustic waves EXCEPT: pressure, parameters, density, acousitc variables
Definition
parameters
Term
all of the following are true of sound EXCEPT: they are acoustic, they are pressure waves, they are tranverse, the move energy
Definition
they are transverse
Term
what type of waves will exhibit both consstructive and destructive interference?
Definition
waves of different frequency
Term
two waves travel in a medium and arrive at a location at the same time. what event takes place?
Definition
interference of waves
Term
multiple wave beams arrive at an identical location at exactly the same time to combine and form a single wave. this combination is called _______?
Definition
interference
Term
which types of waves will exhibit both constructive and destructive interference?
Definition
waves of different frequency
Term
what are the units used to describe pressure?
Definition
pascals (Pa)
Term
what are the units used to describe density?
Definition
kg/cm3
Term
what are the units used to describe distance?
Definition
cm, feet, mile, kilometers, in, yards
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