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Waves & Sound

Vocabulary

TermDefinition
Vibration repeated back-and-forth or up-and-down motion (disturbance)
Particle small portion of matter
Mechanical Energy kinetic or potential energy associated with the motion or position of an object
Mechanical Wave requires a medium through which to travel (ex: water, sound)
Energy the ability to do work or cause change
Matter anything that has mass and takes up space
Propagate to spread out or multiply
Medium material through which a wave travels
Transverse Wave disturbs a medium perpendicular to the direction in which the wave travels (ex: water, light)
Longitudinal Wave disturbs a medium parallel to the direction in which the wave travels (ex: sound)
Wave Pulse single disturbance that travels through a medium
Equilibrium state of balance where there is no disturbance or wave
Amplitude displacement of a wave's peak/crest or trough from equilibrium
Volume produced by the amplitude (intensity) of a sound wave; in units of decibels (dB)
Frequency number of complete wavelengths that pass a point in a given time (a.k.a. pitch with sound) in units of Hz
Wave disturbance that transfers energy from one place to another
Wavelength horizontal distance between two adjacent wave crests/peaks or compressions; in units of meters (m)
Wave Period time required for one complete wave cycle; in units of seconds (s)
Wave Cycle one complete motion of the repeating pattern of a wave (oscillation)
Wave Speed frequency x wavelength ( v = f λ ); in units of m/s
Tension pressure of a material, such as in a string, rope, or spring
Density compactness of a substance
Temperature average energy of motion of the particles of a substance
Sound disturbance that travels through a medium as a longitudinal wave via compressions and rarefactions (expansions)
Standing Wave appears to be stationary due to the effects of constructive and destructive interference
Doppler Effect change in wave frequency and wavelength as the source and observer move toward or away from each other
Magnitude size or quantity (number)
Created by: john_bailey720
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