Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/28

Click to flip

28 Cards in this Set

  • Front
  • Back
Sound is a ___ & ___ wave that cannot travel through ___
mechanical & longitudinal
vacuum
Molecules that are sqeezed together
Compressed
Molecules that are stretched apart
Rarefied
The acoustic effects of the medium upon the sound wave are called what?
Acoustic Propagation Properties
The effects of the sound wave upon the biologic tissue through which it passes
Biologic Effects
Concentration of force in an area? Units?
Pressure / pascals (Pa)
Concentration of mass in a volume? Units?
Density / kg/cm
Measure of particle motion? Units?
Distance / cm
The parameters used to describe the characteristics of a sound wave are called what?
Acoustic Parameters
In which type of wave do particles move in a direction that is perpendicular to the direction that the wave propagates
Transverse Waves
In which type of wave do particles move in the same direction that the wave propagates
Longitudinal Waves
When the peaks & troughs of a pair of waves occur at the same time and location, they are said to be what?
In-Phase
When the peaks & troughs of a pair of waves occur at different times, they are said to be what?
Out-of-Phase
When multiple waves arrive at an identical location at exactly the same time combining to form one wave
Interference
When multiple in-phase waves combine to form a single wave with greater amplitude than any of its components
Constructive Interference
When multiple out-of-phase waves combine to form a single wave of lesser amplitude than any of its components
Destructive Interference
Sound waves are identified by oscillations in what?
Acoustic Variables
Name the three acoustic variables which are used to distinguish between sound waves and other types of waves
Pressure
Density
Distance
When the frequencies of the sound waves differ, what unique type of interference occurs?
Both Constructive & Deconstructive Interference (forming an oscillating waveform)
What do waves transfer from one location to another?
A. matter
B. molecules
C. energy
D. water
C
Which of the following best describes sound waves?
A. a series of compressions and rarefactions
B. waves that are heard by man
C. movement of molecules and energy from one location to another
D. waves that are used to make images of anatomy
A
Variations in all of the following identify specific waves as acoustic waves except:
A. pressure
B. parameters
C. density
D. acoustic variables
B
All of the following are true of sound waves except:
A. they are acoustic
B. they are pressure waves
C. they are transverse
D. they move energy
C
All of the following are acoustic parameters except:
A. pressure
B. period
C. propagation speed
D. frequency
A
Which of the following best describes sound wave?
A. transverse, pressure waves
B. transverse, longitudinal waves
C. longitudinal, out-of-phase waves
D. longitudinal, pressure waves
D
Two waves are traveling in a medium and arrive at a location at the same time. What event takes place?
A. constructive interference
B. destructive interference
C. interference
D. reflection
C
Which types of waves will exhibit both constructive and destructive interference?
A. waves of different amplitude
B. a pair of longitudinal waves
C. waves of different frequency
D. out-of-phase waves
C
What units are used to report the pressure of a sound beam?
A. pounds
B. centimeters
C. pascals
D. kg/cm
C