Understanding Ultrasound Physics
Fourth Edition – Edelman Exam
Questions with 100% Correct Answers
What is the vertical axis of a graph called?
a. z-axis
b. x-axis
c. y-axis
d. time-axis - ANSWER-c. y-axis
What is the name of the horizontal axis of a graph?
a. z-axis
b. x-axis
c. y-axis
d. red axis - ANSWER-b. x-axis
How are scores on the ultrasound board exams related to study time?
a. inversely
b. conversely
c. directly
d. unrelated - ANSWER-c. directly
How are caloric intake and weight related?
A. inversely
B. partially
C. reciprocally
D. directly - ANSWER-d. directly
How is weight related to a sonographer's time spent exercising?
a. inversely
b. conversely
c. directly
d. unrelated - ANSWER-A. inversely
What is the reciprocal of 1,000?
a. one-hundreth
b. 1,000
c. 0.001
d. one-millionth - ANSWER-c. 0.001
What is the reciprocal of 5?
a. one-hundredth
b. 5
,c. 1/5
d. one-millionth - ANSWER-c. 1/5
What is the reciprocal of 1/10?
a. one-hundredth
b. 10
c. 1/10
d. one-millionth - ANSWER-b. 10
A sack contains 6 pounds of flour. The contents of the bag are increased by a factor of
5. How much flour is in the bag?
a. 6 pounds
b. 11 pounds
c. 60 pounds
d. 30 pounds - ANSWER-d. 30 pounds
A bouquet has 30 flowers. The size of the bouquet is decreased by a factor of 3. How
many flowers remain?
a. 27
b. 0
c. 10
d. 15 - ANSWER-c. 10
Which of the following is not a measurement of area?
a. square cm
b. meters squared
c. cubic meters
d. feet x feet - ANSWER-c. cubic meters
A sonographer measures the perimeter of an anatomical structure. Which of the
following choices is a reasonable value for the measurement?
A. 6 cm2
B. 5 cc
C. 15 mm
D. 18 dB - ANSWER-c. 15mm
What are the units associated with the circumference of a circle?
a. mm
b. mm2
c. cm3
d. m4 - ANSWER-a. mm
The volume of a cystic structure is estimated from sonographic data. Which of the
following is an acceptable measurement of this volume?
a. 6
b. 6cm
,c. 6cm2
d. 6cm3 - ANSWER-d. 6cm3
The speed of red blood cells traveling through a blood vessel is 750 cm/sec. You are
asked to measure this speed in miles per hour. What information would be sufficient for
you to complete your task?
A. how many seconds in a minute and how many blood cells in the vessel
B. the number of miles in a meter
C. how many seconds per hour and the number of miles in a centimeter
D. the direction of red blood cell motion and the Doppler shift frequency - ANSWER-c.
how many seconds per hour and the number of miles in a centimeter
How much bigger is one billion than one thousand?
a. 1,000 times
b. 1,000,000 times
c. 10 times
d. 10,000 times - ANSWER-b. 1,000,000 times
Select the sequence that appears in increasing order.
A. mega, kilo, hecto, milli, giga
B. nano, milli, micro, deci, deca, mega
C. centi, deci, deca, hecto
D. milli, hecto, centi, deci, nano, giga - ANSWER-c. centi, deci, deca, hecto
How many nanoseconds are in 7 seconds?
A. 7,000,000
B. 7,000,000,000
C. 7 million
D. 0.00000007 - ANSWER-b. 7,000,000,000
the letters below represent the abbreviations for the prefixes of the metric system.
Select the sequence that appears in decreasing order.
a. m, k, M, g, da
d. g, m, k, d, microsecond
c. g, k, di, m, microsecond, n
d. M, k, da, d, c - ANSWER-d. M, k, da, d, c
Match the following prefixes with their meanings:
a. mega
b. hecto
c. milli
d. kilo
e. nano
f. giga
1. hundreds
, 2. thousands
3. thousandths
4. millions
5. billions
6. billionths - ANSWER-a. mega 4. millions
b. hecto 1. hundreds
c. milli 3. thousandths
d. kilo 2. thousands
e. nano 6. billionths
f. giga 5. billions
Which term is the reciprocal of mega?
A. nano
B. kilo
C. macro
D. micro - ANSWER-d. micro
How can the volume of an irregularly shaped object be measured most accurately?
a. by visual inspection
b. by its weight
c. by immersing it in water
d. by ultrasound scanning it - ANSWER-c. by immersing it in water
What term is used to describe the effects of an ultrasound wave on living tissues?
a. toxic effects
b. acoustic propagation properties
c. biological effects
d. transmission properties - ANSWER-c. biological effects
As sound travels through a medium, what term describes the effects of the medium on
the sound wave?
a. toxic effects
b. acoustic propagation properties
c. bioeffects
d. transmission properties - ANSWER-b. acoustic propagation properties
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 - 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
Fourth Edition – Edelman Exam
Questions with 100% Correct Answers
What is the vertical axis of a graph called?
a. z-axis
b. x-axis
c. y-axis
d. time-axis - ANSWER-c. y-axis
What is the name of the horizontal axis of a graph?
a. z-axis
b. x-axis
c. y-axis
d. red axis - ANSWER-b. x-axis
How are scores on the ultrasound board exams related to study time?
a. inversely
b. conversely
c. directly
d. unrelated - ANSWER-c. directly
How are caloric intake and weight related?
A. inversely
B. partially
C. reciprocally
D. directly - ANSWER-d. directly
How is weight related to a sonographer's time spent exercising?
a. inversely
b. conversely
c. directly
d. unrelated - ANSWER-A. inversely
What is the reciprocal of 1,000?
a. one-hundreth
b. 1,000
c. 0.001
d. one-millionth - ANSWER-c. 0.001
What is the reciprocal of 5?
a. one-hundredth
b. 5
,c. 1/5
d. one-millionth - ANSWER-c. 1/5
What is the reciprocal of 1/10?
a. one-hundredth
b. 10
c. 1/10
d. one-millionth - ANSWER-b. 10
A sack contains 6 pounds of flour. The contents of the bag are increased by a factor of
5. How much flour is in the bag?
a. 6 pounds
b. 11 pounds
c. 60 pounds
d. 30 pounds - ANSWER-d. 30 pounds
A bouquet has 30 flowers. The size of the bouquet is decreased by a factor of 3. How
many flowers remain?
a. 27
b. 0
c. 10
d. 15 - ANSWER-c. 10
Which of the following is not a measurement of area?
a. square cm
b. meters squared
c. cubic meters
d. feet x feet - ANSWER-c. cubic meters
A sonographer measures the perimeter of an anatomical structure. Which of the
following choices is a reasonable value for the measurement?
A. 6 cm2
B. 5 cc
C. 15 mm
D. 18 dB - ANSWER-c. 15mm
What are the units associated with the circumference of a circle?
a. mm
b. mm2
c. cm3
d. m4 - ANSWER-a. mm
The volume of a cystic structure is estimated from sonographic data. Which of the
following is an acceptable measurement of this volume?
a. 6
b. 6cm
,c. 6cm2
d. 6cm3 - ANSWER-d. 6cm3
The speed of red blood cells traveling through a blood vessel is 750 cm/sec. You are
asked to measure this speed in miles per hour. What information would be sufficient for
you to complete your task?
A. how many seconds in a minute and how many blood cells in the vessel
B. the number of miles in a meter
C. how many seconds per hour and the number of miles in a centimeter
D. the direction of red blood cell motion and the Doppler shift frequency - ANSWER-c.
how many seconds per hour and the number of miles in a centimeter
How much bigger is one billion than one thousand?
a. 1,000 times
b. 1,000,000 times
c. 10 times
d. 10,000 times - ANSWER-b. 1,000,000 times
Select the sequence that appears in increasing order.
A. mega, kilo, hecto, milli, giga
B. nano, milli, micro, deci, deca, mega
C. centi, deci, deca, hecto
D. milli, hecto, centi, deci, nano, giga - ANSWER-c. centi, deci, deca, hecto
How many nanoseconds are in 7 seconds?
A. 7,000,000
B. 7,000,000,000
C. 7 million
D. 0.00000007 - ANSWER-b. 7,000,000,000
the letters below represent the abbreviations for the prefixes of the metric system.
Select the sequence that appears in decreasing order.
a. m, k, M, g, da
d. g, m, k, d, microsecond
c. g, k, di, m, microsecond, n
d. M, k, da, d, c - ANSWER-d. M, k, da, d, c
Match the following prefixes with their meanings:
a. mega
b. hecto
c. milli
d. kilo
e. nano
f. giga
1. hundreds
, 2. thousands
3. thousandths
4. millions
5. billions
6. billionths - ANSWER-a. mega 4. millions
b. hecto 1. hundreds
c. milli 3. thousandths
d. kilo 2. thousands
e. nano 6. billionths
f. giga 5. billions
Which term is the reciprocal of mega?
A. nano
B. kilo
C. macro
D. micro - ANSWER-d. micro
How can the volume of an irregularly shaped object be measured most accurately?
a. by visual inspection
b. by its weight
c. by immersing it in water
d. by ultrasound scanning it - ANSWER-c. by immersing it in water
What term is used to describe the effects of an ultrasound wave on living tissues?
a. toxic effects
b. acoustic propagation properties
c. biological effects
d. transmission properties - ANSWER-c. biological effects
As sound travels through a medium, what term describes the effects of the medium on
the sound wave?
a. toxic effects
b. acoustic propagation properties
c. bioeffects
d. transmission properties - ANSWER-b. acoustic propagation properties
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 - 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
