Understanding Ultrasound Physics
(Sound) Chapter 2 Exam Questions and
Answers
What does Acoustic propagation properties mean? - ANSWER-Effect of the medium
upon the wave
What does Biologic effect mean? - ANSWER-effect of wave upon the biologic tissue
How does sound travel? - ANSWER-in a straight line
Sound waves are _______ and ________ waves - ANSWER-Mechanical and
longitudinal
What are the three acoustic variables? - ANSWER-PDD pressure, distance and density
Acoustic variables _____________ sound waves - ANSWER-Identify
One of the acoustic variables must have ____________ for it to be a sound wave -
ANSWER-rhythmic oscillation
Acoustic parameters are used to ________ a sound wave - ANSWER-characterize
The 7 acoustic parameters are? - ANSWER-period, frequency, amplitude, power,
intensity, wavelength, speed
In what direction does the transverse wave move in? - ANSWER-perpendicular to the
direction that the wave propagates
In what direction does a longitudinal wave move in? - ANSWER-same to the direction
that the wave propagates
When are waves considered in phased waves? - ANSWER-when peaks occur at the
same time same location
When are waves considered out of phased? - ANSWER-when peaks occur at different
times different locations
What is interference? - ANSWER-when waves combine
What occurs in constructive interference? - ANSWER-when in phased waves combine
to form one bigger wave
(Sound) Chapter 2 Exam Questions and
Answers
What does Acoustic propagation properties mean? - ANSWER-Effect of the medium
upon the wave
What does Biologic effect mean? - ANSWER-effect of wave upon the biologic tissue
How does sound travel? - ANSWER-in a straight line
Sound waves are _______ and ________ waves - ANSWER-Mechanical and
longitudinal
What are the three acoustic variables? - ANSWER-PDD pressure, distance and density
Acoustic variables _____________ sound waves - ANSWER-Identify
One of the acoustic variables must have ____________ for it to be a sound wave -
ANSWER-rhythmic oscillation
Acoustic parameters are used to ________ a sound wave - ANSWER-characterize
The 7 acoustic parameters are? - ANSWER-period, frequency, amplitude, power,
intensity, wavelength, speed
In what direction does the transverse wave move in? - ANSWER-perpendicular to the
direction that the wave propagates
In what direction does a longitudinal wave move in? - ANSWER-same to the direction
that the wave propagates
When are waves considered in phased waves? - ANSWER-when peaks occur at the
same time same location
When are waves considered out of phased? - ANSWER-when peaks occur at different
times different locations
What is interference? - ANSWER-when waves combine
What occurs in constructive interference? - ANSWER-when in phased waves combine
to form one bigger wave
