DMS 216 CHAPTER 3 PHYSICS
(SOUND WAVES) QUESTIONS WITH
100% CORRECT ANSWERS
\.The seven parameters describe sound waves - ANSWERS✔-period speed
frequency
amplitude
power
intensity wavelength
\.the waves period & amplitude - ANSWERS✔-amplitude is difference between
maximum and average of acoustic variable or the difference between the
minimum and average of acoustic variable
\.Infrasound - ANSWERS✔-Sound waves with frequencies below 20 Hz.
\.Audible sound - ANSWERS✔-between 20 Hz and 20 kHz
\.ultrasound - ANSWERS✔-Sound waves with frequencies above 20,000 Hz.
\.Frequency and period - ANSWERS✔-inversely related-reciprocals
, as frequency increases period decreases
as frequency decreases period increases
\.peak to peak amplitude - ANSWERS✔-The difference between maximum and
minimum values of an acoustic variable
\.power - ANSWERS✔-the rate at which work is done
units- watts
typical values: Ultrasound- 0.004-0.9 watts (4-90 watts)
\.Intensity - ANSWERS✔-concentration of energy in a sound beam
divide beams power by the beams cross sectional area
\.ALL 3 are directly related
power proportional to amplitude squared
intensity proportional to amplitude squared - ANSWERS✔-how are power,
intensity, and amplitude related?
\.medium - ANSWERS✔-tissue through which sound is traveling
(SOUND WAVES) QUESTIONS WITH
100% CORRECT ANSWERS
\.The seven parameters describe sound waves - ANSWERS✔-period speed
frequency
amplitude
power
intensity wavelength
\.the waves period & amplitude - ANSWERS✔-amplitude is difference between
maximum and average of acoustic variable or the difference between the
minimum and average of acoustic variable
\.Infrasound - ANSWERS✔-Sound waves with frequencies below 20 Hz.
\.Audible sound - ANSWERS✔-between 20 Hz and 20 kHz
\.ultrasound - ANSWERS✔-Sound waves with frequencies above 20,000 Hz.
\.Frequency and period - ANSWERS✔-inversely related-reciprocals
, as frequency increases period decreases
as frequency decreases period increases
\.peak to peak amplitude - ANSWERS✔-The difference between maximum and
minimum values of an acoustic variable
\.power - ANSWERS✔-the rate at which work is done
units- watts
typical values: Ultrasound- 0.004-0.9 watts (4-90 watts)
\.Intensity - ANSWERS✔-concentration of energy in a sound beam
divide beams power by the beams cross sectional area
\.ALL 3 are directly related
power proportional to amplitude squared
intensity proportional to amplitude squared - ANSWERS✔-how are power,
intensity, and amplitude related?
\.medium - ANSWERS✔-tissue through which sound is traveling
