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UNDERSTANDING ULTRASOUND PHYSICS FOURTH
EDITION – EDELMAN|COMPLETE EXAM SET WITH
ACTUAL QUESTIONS AND VERIFIED SOLUTIONS
2026
Which of the following is true of all waves?
a. they travel through a medium
b. all carry energy from one site to another
c. their amplitudes do not change
d. they travel in a straight line - correct-answer -b. they all carry energy from one
site to another
Which of the following types of waves do not require a medium in order to
propagate? (More than one answer may be correct).
a. light
b. heat
c. sound
d. television - correct-answer -A. light
B. heat
D. television
Which of the following describes the characteristics of a sound wave?
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a. longitudinal, non-mechanical
b. mechanical, transverse
c. transverse, acoustic
d. mechanical, longitudinal - correct-answer -d. mechanical, longitudinal
Sound is best described as _____.
A. a series of compressions and rarefactions
B. a transverse wave
C. a wave humans can hear
D. an oblique displacement of acoustic energy - correct-answer -a. a series of
compressions and rarefactions
All of the following are true about sounds waves except:
a. they are mechanical
b. they are transverse
c. they carry energy from place to place
d. they generally travel in a straight line - correct-answer -b. they are transverse
Which of the following 8 selections are acoustic variables?
1. frequency
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2. pressure
3. propagation speed
4. wavelength
5. voltage
6. intensity
7. motion of particles in the wave
8. density - correct-answer -2. pressure
7. motion of particles in the wave
8. density
What are the units of a pressure measurement of an acoustic wave? (More than
one answer may be correct).
a. atmospheres (atm)
b. pascals (Pa)
c. millimeters of mercury (mm Hg)
d. pounds/sq. inch (lb/in^2) - correct-answer -a. atmospheres (atm)
b. pascals (Pa)
c. millimeters of mercury (mm Hg)
d. pounds/sq. inch (lb/in^2)
Sound can be characterizes as:
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a. energy flowing through a vacuum
b. a variable
c. cyclical oscillations in certain variables
d. a principle of acoustics - correct-answer -c. cyclical oscillations in certain
variables
Which units are appropriate for pressure:
a. lb/in^3
b. fahrenheit degrees
c. miles
d. Pa
e. cm
f. centigrade degrees
g. lb/in^2
h. kg/m^3 - correct-answer -d. Pa
g. lb/in^2
Which units are appropriate for density:
a. lb/in^3
b. fahrenheit degrees
c. miles
UNDERSTANDING ULTRASOUND PHYSICS FOURTH
EDITION – EDELMAN|COMPLETE EXAM SET WITH
ACTUAL QUESTIONS AND VERIFIED SOLUTIONS
2026
Which of the following is true of all waves?
a. they travel through a medium
b. all carry energy from one site to another
c. their amplitudes do not change
d. they travel in a straight line - correct-answer -b. they all carry energy from one
site to another
Which of the following types of waves do not require a medium in order to
propagate? (More than one answer may be correct).
a. light
b. heat
c. sound
d. television - correct-answer -A. light
B. heat
D. television
Which of the following describes the characteristics of a sound wave?
,2|Page
a. longitudinal, non-mechanical
b. mechanical, transverse
c. transverse, acoustic
d. mechanical, longitudinal - correct-answer -d. mechanical, longitudinal
Sound is best described as _____.
A. a series of compressions and rarefactions
B. a transverse wave
C. a wave humans can hear
D. an oblique displacement of acoustic energy - correct-answer -a. a series of
compressions and rarefactions
All of the following are true about sounds waves except:
a. they are mechanical
b. they are transverse
c. they carry energy from place to place
d. they generally travel in a straight line - correct-answer -b. they are transverse
Which of the following 8 selections are acoustic variables?
1. frequency
,3|Page
2. pressure
3. propagation speed
4. wavelength
5. voltage
6. intensity
7. motion of particles in the wave
8. density - correct-answer -2. pressure
7. motion of particles in the wave
8. density
What are the units of a pressure measurement of an acoustic wave? (More than
one answer may be correct).
a. atmospheres (atm)
b. pascals (Pa)
c. millimeters of mercury (mm Hg)
d. pounds/sq. inch (lb/in^2) - correct-answer -a. atmospheres (atm)
b. pascals (Pa)
c. millimeters of mercury (mm Hg)
d. pounds/sq. inch (lb/in^2)
Sound can be characterizes as:
, 4|Page
a. energy flowing through a vacuum
b. a variable
c. cyclical oscillations in certain variables
d. a principle of acoustics - correct-answer -c. cyclical oscillations in certain
variables
Which units are appropriate for pressure:
a. lb/in^3
b. fahrenheit degrees
c. miles
d. Pa
e. cm
f. centigrade degrees
g. lb/in^2
h. kg/m^3 - correct-answer -d. Pa
g. lb/in^2
Which units are appropriate for density:
a. lb/in^3
b. fahrenheit degrees
c. miles
