Simple Harmonic Motion
Any periodic motion that is the result of a restoring force that is proportional to displacement
Max displacement from equalibrium position (Distance from equalibrium to the crest or trough)
Time it takes to complete one cycle
Number of oscillations in a unit of time. Reciporcal of time period: f= 1/T
Anything through which a wave travels (air, water, spring, earth)
A wave whose particles vibrate perpendicularly to the direction of wave motion. (Light waves, electromagnetic waves)
Top of a wave
Bottom of a wave
The length of 1 cycle of a wave
A wave whose particles vibrate parallel to the direction of wave motion. (Compressional waves, requires a medium, sound waves)
To waves interfere with eachother and build up (Interference in which individual displacements on the same side of the equalibrium position are added together to form the resultant wave)
To waves interfere with eachother and switch places (Interference in which individual displacements on opposite sides of the equalibrium position are added together to form the resultant wave)
A wave pattern that results when two waves of the same frequency, wavelength, and amplitude travel in opposite directions and interfere (standing wave)
A point in a standing wave that always undergoes complete destructive interference and therefore is stationary (points that the wave hits equalibrium)
A point in a standing wave halfway between two nodes, at which the largest amplitude occurs (top of crests and troughs)
The region of a longitudinal wave in which density and pressure are greater than normal
The region of a longitudinal wave in which density and pressure are less than normal
Relative intensity, determined by relating intensity of sound waves to intensity at the threshold of hearing
A conditin that exists when frequency of a force applied to a system matches the natural frequency of a vibration of the system
The lowest frequency of a vibration of a standing wave (determines pitch)
A series of frequencies that includes fundamental frequency and integral multiples of the fundamental frequency
Interference of waves of slightly different frequencies traveling in the same direction, perceived as a variation in loudness
Transverse wave consisting of oscillating electric and magnetic fields at right angles to eachother
Centers of compressions
Carries a great deal of energy concentrated on the surface of one
The frequencies of sounds
That waves can occupy the same space at the same time
What kind of waves are sound waves?
Highest or lowest sounds a object can make
What affects the speed of sound?
the medium, wavelength, and frequency
A frequency shift that is the result of relative motion between the source of waves and an observer
What unit measures the intensity of sound, and what kind of scale is this unit based on?
Decibles (dB), logarithmic scale
What determines whether you can hear a sound or not?
Intensity and frequency
What word best describes sounds that you can hear?
The quality of a steady musical sound that is the result of a mixture of harmonics present at different intensities (sound quality)
A variation in loudness
Equation for the harmonic series of a pipe open at both ends.
Equation for the harmonic series of a pipe open at one end.
Equation for the harmonic series of standing waves on a vibrating string.
If both ends of a pipe are open..
All harmonics are present
If one end of a pipe is open...
Only odd harmonics are present