FOURTH EDITION EDELMAN
CERTIFICATION SCRIPT 2026 VERIFIED
ANSWERS GRADED A+
⩥ What does Biologic effect mean? Answer: effect of wave upon the
biologic tissue
⩥ How does sound travel? Answer: in a straight line
⩥ Sound waves are _______ and ________ waves Answer: Mechanical
and longitudinal
⩥ What are the three acoustic variables? Answer: PDD pressure,
distance and density
⩥ Acoustic variables _____________ sound waves Answer: Identify
⩥ One of the acoustic variables must have ____________ for it to be a
sound wave Answer: rhythmic oscillation
⩥ Acoustic parameters are uesed to ________ a sound wave Answer:
characterize