science pg 168-177

Question 1

the strength of a sound wave

Answer 1

intensity

Question 2

the effect of intensity on the way the human ear perceives sound

Answer 2

loudness

Question 3

a measure of sound intensity that better reflects perceived loudness

Answer 3

sound intensity level

Question 4

the unit of sound intensity

Answer 4

decibel

Question 5

the effect of frequency on the way the human ear perceives sound

Answer 5

pitch

Question 6

sound in the audible frequency range of human hearing

Answer 6

audible sound

Question 7

sounds with pitches below the audible range

Answer 7

infrasonic sounds

Question 8

the change in frequency caused by an object’s motion

Answer 8

Doppler effect

Question 9

sounds with pitches above the audible range

Answer 9

ultrasonic sounds

Question 10

a speed above the speed of sound

Answer 10

supersonic

Question 11

a speed below the speed of sound

Answer 11

subsonic

Question 12

a violent compression pulse produced by constructive interference between waves produced by an object moving at supersonic speeds

Answer 12

shock wave

Question 13

a loud noise caused by the shock wave from traveling at supersonic speeds

Answer 13

sonic boom

Question 14

multiple reflections that cause persistence of sound

Answer 14

reverberation

Question 15

a sound heard distinctly after being reflected from some object

Answer 15

echo

Question 16

system developed during WW2 to locate submerged enemy submarines

Answer 16

sonar

Question 17

the process of dissipating the energy of sound waves in matter

Answer 17

absorption

Question 18

study of sound

Answer 18

acoustics