# Shared Flashcard Set

## Details

Edelman
chapter 2
27
Physics
05/28/2011

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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