In ultrasound the _____________ of the sound is much greater than in normal sound.
a. frequency
b. period
c. wavelength
d. amplitude
e. speed
Question 2
Which of the following is not one of the ways sound can be used?
a. to circulate the refrigerant in a refrigerator
b. to relay information to orbiting satellites
c. to form images of internal organs
d. to measure the air temperature aloft
e. to make a bubble in water produce light