SPI: SOUND WAVES questions and answers

What term is used to describe the effects of an ultrasound wave on living tissues? a. toxic effects b. acoustic propagation properties c. biological effects d. transmission CORRECT ANSWERS: c. As sound travels through a medium, what term describes the effects of the medium on the sound wave? a. toxic effects b. acoustic propagation properties c. bioeffects d. transmission properties CORRECT ANSWERS: b. acoustic means 'sound' propagation means 'travel' Which of the following is true off all waves? a. they travel in a straight line b. all carry energy from one site to another c. their amplitudes do not change d. they travel in a medium CORRECT ANSWERS: b. Which of the following types of waves do NOT require a medium in order to propagate? ision CORRECT ANSWERS: a. b. d. - sound cannot travel through a vacuum Which of the following describes the characteristics of a sound wave? a. longitudinal, non-mechanical b. mechanical, transverse verse, acoustic d. mechanical, longitudinal CORRECT ANSWERS: d. Sound is best described as _____. a. a series of compressions and rarefactions b. a transverse wave c. a wave humans can hear d. an oblique displacement of acoustic energy CORRECT ANSWERS: a. (to count at least needs 1 compression + 1 rarefaction) All of the following are TRUE about sound waves except _____. a. they are mechanical b. they are transverse c. they carry energy from place to place d. they generally travel in a straight line CORRECT ANSWER