Resonance and Sound Flashcards
Waves with the same amplitude and wavelength travelling in opposite directions result in an interference pattern called a ________ wave
standing
At some times, standing waves are completely out-of-phase resulting in destructive interference at every point resulting in ____ displacement
zero
If two waves pass through each other in opposite directions, they continually shift in and out of phase to produce a wave that seems to oscillate between fixed locations of ___________ and ____________ interference
destructive and constructive
_____ are parts of the wave that never leave the equilibrium position
nodes
the peaks of the standing wave that oscillate between maximum displacements
antinodes
nodes and antinodes appear every ____ wavelength along the equilibrium line.
half!!
Standing, or stationary, wave patterns can be observed on a stretched string or wire that is _____ at both ends
fixed
The frequencies at which standing waves can exist in a string of a given length are the _______ or resonant frequencies of the string
natural
When energy is added to the string, the initial wave goes DOWN the string and reflects from the _____ end.
fixed
The reflected wave __________ with the incident wave
interferes
If the waves are at the FUNDAMENTAL frequency or if they have one of a number of ________ frequencies, a stationary wave results.
OVERTONE
(True/False) A string vibrating at the fundamental frequency has only one antinode and a node at either end.
TRUE
What is the length of the string equal to?
(1/2) λ
For a standing wave pattern to exist, the number of wavelengths on the string depends on what?
THE LENGTH OF THE STRING
In music, overtones or harmonies can exist in the same string as the what?
fundamental frequency
If an air column is closed at one end and open at the other, it is referred to as a what?
closed air column
When a vibrating tuning fork is held over the open end of such a column and the length of the column is changed, it is found that the ______ increases sharply at very specific lengths
VOLUME
Increased volume due to a tuning fork over an closed air column is because of _________ at the length
RESONANCE
Longitudinal sound waves can also form standing or ________ waves
resonant
When an antinode occurs at the open end of the column, _________ is heard
RESONANCE
when a ____ occurs at the open end of the column, no resonance is heard
NODE
(1/4)λ + any number of (1/2)λ will produce what?
RESONANCE
(True/False) Resonance will occur when the open air column is (1/4)λ, (3/4)λ, etc
FALSE
