Sound

Question 1

All waves carry ___ from one location to another.

Answer 1

energy

Question 2

Sound pulses created by a transducer travel through biologic tissue called

Answer 2

media

Question 3

Sound waves are described as _____ and longitudinal.

Answer 3

mechanical

Question 4

Term that describes molecules being squeezed together

Answer 4

compression

Question 5

Term that describes molecules being stretched apart

Answer 5

rarefaction

Question 6

The effects of the medium upon the sound wave

Answer 6

acoustic propagation properties

Question 7

effects of sound wave upon medium

Answer 7

biologic effects

Question 8

three acoustic variables that identify sound waves

Answer 8

pressure
density
distance

Question 9

units of pressure

Answer 9

pascals

Question 10

units of density

Answer 10

kg/cm cubed

Question 11

units of distance

Answer 11

cm

mm

Question 12

concentration of force in an area

Answer 12

pressure

Question 13

concentration of mass in a volume

Answer 13

density

Question 14

measurement of particle motion

Answer 14

distance

Question 15

acoustic parameters that describe sound waves

Answer 15

intensity
power
amplitude
frequency
period
wavelength
speed

Question 16

particle motion in a transverse wave

Answer 16

perpendicular

Question 17

particle motion in a longitudinal wave

Answer 17

parallel

Question 18

a pair of waves are considered ____ when their peaks occur at the same time and at the same location

Answer 18

in-phase

Question 19

when two waves are _____ their peaks occur at different times and so do their troughs

Answer 19

out-of-phase

Question 20

when waves lose their individual characteristics and combine to form a single wave

Answer 20

interference

Question 21

interference of a pair of in-phase waves results in the formation of a single wave of greater amplitude called

Answer 21

constructive interference

Question 22

when two out-of-phase waves combine to form a single wave of lesser amplitude

Answer 22

destructive interference

Question 23

when two out-of-phase waves are of equal amplitude, this may occur

Answer 23

complete destructive interference

Question 24

when waves of different frequencies interfere, what type of interference occurs

Answer 24

both constructive and destructive interference occur