The Nature of Sound Ch. 2

Question 1

a longitudinal wave that is created

Answer 1

sound wave

Question 2

a physical environment in which phenomena occur

Answer 2

medium

Question 3

a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave

Answer 3

pitch

Question 4

an observed change in the frequency of a wave when the source or observer is moving

Answer 4

doppler effect

Question 5

the extent to which a sound can be heard

Answer 5

loudness

Question 6

the most common unit used to measure loudness

Answer 6

decibel

Question 7

a reflected sound wave

Answer 7

echo

Question 8

the process of using reflected sound waves to find objects; used by animals such as bats

Answer 8

echolocation

Question 9

the combination of two or more waves that results in a single wave

Answer 9

interference

Question 10

the explosive sound heard when a shock wave from an object traveling faster than the speed of a sound reaches a person’s ears

Answer 10

sonic boom

Question 11

a pattern of vibration that simulates a wave that is standing still

Answer 11

standing wave

Question 12

a phenomenon that occurs when two objects naturally vibrate at the same frequency; the sound produced by one object causes the other object to vibrate

Answer 12

resonance

Question 13

the result of the blending of several pitches through interference

Answer 13

sound quality

Question 14

a sound that consists of a random mix of frequencies

Answer 14

noise