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Sound waves
Parameters
Mystery
100

How many parameters are there in ultrasound? 

a. 5

b. 7

c. 10

d. 8

b. 7

100

How are period and frequency related?

a. directly related 

b. reciprocals

c. not related

b. reciprocals

100

What is the rate of energy transfer or the rate at which work is performed? 

a. power

b. intensity

c. amplitude

d. none of the above

a. power

200

What is the only parameter that is determined by both the source and the medium? 

a. frequency

b. intensity

c. wavelength

c. propagation speed

c. wavelength

200

What are the three "bigness parameters"? 

a. amplitude, power, intensity

b. amplitude, force, power

c. amplitude, pressure, power

d. Power, intensity, pressure

a. amplitude, power, intensity

200

What is the difference between maximum and minimum values of an acoustic variable? 

a. Frequency

b. peak to peak amplitude

c. amplitude

d. all of the above

b. peak to peak amplitude

300

What is the frequency of audible sound?

a. 20 Hz to 20 kHz

b. less than 20 Hz

c. more than 20 kHz

d. 20 kHz to 30 kHz

a. 20 Hz to 20 kHz

300

What wave is ultrasonic? 

a. 300 MHz

b. 5 Hz

c. 4 MHz

d. 30 Hz

c. 4 MHz

300

What two things descibe the size or maggnitude of a wave? 

a. pressure and power

b. amplitude and intensity

c. amplitude and power

d. power and intensity

c. amplitude and power

400

How fast does sound travel through soft tissue? 

a. 1.54 mm/µs

b. 1,560 m/s 

c. 1.54 m/s 

d. None of the above

a. 1.54 mm/µs

400

What wave is inrasonic?

a. 4 MHz

b. 300 kHz

c. 28 Hz

d. 1 Hz

c. 28 Hz

400

Power is related to what?

a. amplitude squared 

b. amplitude  

c. intensity

d. a and c

e. b and c

d. a and c

500

Which of the following statements is true? 

a. When stiffness increases, speed decreases. When density increases, speed decreases. 

b. When stiffness increases, speed increases. When density increases, speed decreases. 

c. When stiffness decreases, speed increases. When density decreases, speed decreases. 

d. Stiffness and density have nothing to do with speed. 


b. When stiffness increases, speed increases. When density increases, speed decreases.

500

What is the wavelength of 2 MHz sound in soft tissue?

a. 0.52 mm

b. 0.77 mm

c. 1.54 mm

d. 0.05 mm

b. 0.77 mm

500
If two media are equally stiff, the denser medium will have a ...?

a. higher density

b. lower speed

c.higher speed

d. lower density

b. lower speed