Terms 2 Kno
The number of waves that pass a given point per unit time is the wave's _____
frequency
Sound with frequency below the range of human hearing
a. infrasonic c. audible
b. subsonic d. supersonic
infrasonic
shock wave
The most dominant sound produced when a musical instrument plays a single note is the ____
fundamental
The substance through which a wave transfers energy
medium
The maximum distance that particles are displaced by a wave is the wave's ____
amplitude
Sound that can be heard
audible sound
The difference in pitch between a note and a second note that has twice the frequency of the first note
a. beat c. interval
b. octave d. overtone
octave
In music, the distance between two notes is called a(n) ____
interval
The unit used to measure sound intensity in a way that reflects how our ears perceive sound
a. joule c. hertz
b. decibel d. ampere
decibel
The time needed for one wave to pass is the wave's _____
period
Random sound with no intended pattern
noise
Sound heard distinctly after being reflected from an object
echo
This family of instruments are played by being struck
percussion
The SI unit of frequency
hertz
The spreading out of a wave after it passes through a narrow opening
diffraction
The effect of frequency on the way our ear perceives sound
a. volume b. pitch
c. timbre d. power
pitch
Loud noise caused by a shock wave
sonic boom
A series of organized sound waves with specific pitches that have been deliberately arranged
music
Name the two kinds of wave interference
constructive and destructive
The change in the course of a wave as a result of a collision with an object
reflection
Strength of a sound wave
intensity
Change in sound frequency caused by an object's motion
Doppler effect
harmonic series
This phenomenon is vibrations traveling through a medium in the form of longitudinal pressure waves
sound