EDELMAN SPI WORKBOOK QUESTIONS AND
ANSWERS
Sound waves are - Answers :longitudinal and mechanical
The speed of US in soft tissue is closest to - Answers :1,500m/s
The frequency closest to the lower limit of US is - Answers :15,000 Hz
Which is not an acoustic variable? - Answers :intensity
The effects of soft tissue on US are called - Answers :acoustic propagation properties
All of the following are true EXCEPT - Answers :two waves with identical frequencies
must interfere constructively
Put in decreasing order - Answers :deca, deci, centi, micro
What is the time to complete one cycle - Answers :period
Which of the following sound Waves is ultrasonic and least useful and diagnostic
imaging - Answers :30 kHz
What is the frequency of a wave with 1msec period? - Answers :1 kHz
_______ is the distance covered by one cycle - Answers :wavelength
Which of the following is determined by the sound source and the medium? - Answers
:Range resolution
_________= Frequency x Wavelength - Answers :Propagation speed
As a result of ____ the propagation speed increases - Answers :decreasing
compressibility and decreasing density
Put these in decreasing order of propagation speed - Answers :Solid, liquid, gas
In the same medium, if the frequency of US is increased from 0.77 MHz to 1.54 MHz
what happens to the wavelength? - Answers :Halved
A soundwaves frequency is 10 MHz. The wave is traveling in soft tissue. What is the
wavelength - Answers :0.15mm
If the frequency of a US wave is doubled, what happens to the period? - Answers
:Doubles
ANSWERS
Sound waves are - Answers :longitudinal and mechanical
The speed of US in soft tissue is closest to - Answers :1,500m/s
The frequency closest to the lower limit of US is - Answers :15,000 Hz
Which is not an acoustic variable? - Answers :intensity
The effects of soft tissue on US are called - Answers :acoustic propagation properties
All of the following are true EXCEPT - Answers :two waves with identical frequencies
must interfere constructively
Put in decreasing order - Answers :deca, deci, centi, micro
What is the time to complete one cycle - Answers :period
Which of the following sound Waves is ultrasonic and least useful and diagnostic
imaging - Answers :30 kHz
What is the frequency of a wave with 1msec period? - Answers :1 kHz
_______ is the distance covered by one cycle - Answers :wavelength
Which of the following is determined by the sound source and the medium? - Answers
:Range resolution
_________= Frequency x Wavelength - Answers :Propagation speed
As a result of ____ the propagation speed increases - Answers :decreasing
compressibility and decreasing density
Put these in decreasing order of propagation speed - Answers :Solid, liquid, gas
In the same medium, if the frequency of US is increased from 0.77 MHz to 1.54 MHz
what happens to the wavelength? - Answers :Halved
A soundwaves frequency is 10 MHz. The wave is traveling in soft tissue. What is the
wavelength - Answers :0.15mm
If the frequency of a US wave is doubled, what happens to the period? - Answers
:Doubles
