Science pages 174-177

Question 1

the multiple reflections that cause persistence of sound

Answer 1

reverberation

Question 2

a sound heard distinctly after being reflected from some object

Answer 2

echo

Question 3

____ cannot be heard if the source of the original sound is within 17 m of the reflecting surface

Answer 3

echo

Question 4

designed to measure the distance between objects or to locate hidden objects with electronic equipment

Answer 4

sonar (Sound navigation and ranging)

Question 5

uses pulses of ultrasonic sound to measure the depth of the water under a ship

Answer 5

depth finder

Question 6

procedure for calculating distances by measuring the time interval that elapses between the sending of a sound wave and the return of an echo

Answer 6

echo ranging

Question 7

process of dissipating the energy of sound waves in matter

Answer 7

absorption

Question 8

the study of sound

Answer 8

acoustics

Question 9

when two compression pulses or two rarefaction pulses come into contact

Answer 9

constructive interference

Question 10

when a compression pulse and a rarefaction pulse come into contact

Answer 10

destructive interference

Question 11

uses ultrasonic waves to scan the ocean floor so a computer can develop a 3D image

Answer 11

scanning sonar