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Ch. 15- Waves

pg. 509-537- Characteristics of Waves

TermDefinition
Wave A disturbance that transfers energy from place to place.
Energy The ability to do work or cause change; the ability to move an object some distance.
Medium The material through which a wave travels
Mechanical Wave A wave that requires a medium through which to travel
Vibration A repeated back-and-forth or up-and-down motion.
Transverse Wave A wave that moves the medium in a direction perpendicular to the direction in which the wave travels.
Crest The highest part of a transverse wave.
Trough The lowest part of a transverse wave.
Longitudinal Wave A wave that moves a medium in a direction parallel to the direction in which the wave travels.
Compresion The part of a longitudinal wave where the particles of the medium are close together.
Rarefraction The part of a longitudinal wave where the particles of the medium are far apart.
Amplitude The maximum distance the particles of a medium move away from their rest positions as a wave passes through a medium.
Wavelength The distance between two corresponding parts of a wave.
Frequency The number of complete waves that pass a given point in a certain amount of time.
Hertz (Hz) Unit of measurement for frequency.
Reflection The bouncing back of an object or wave when it hits a surface through which it cannot pass.
Law Of Reflection The rule that the angle of reflection equals of incidence.
Refraction The bending of waves as they enter a new medium at an angle.
Diffraction The bending of waves as they move around a barrier or pass through and opening.
Interferance The interaction between waves when they meet.
Constructive Interferance The interference that occurs when waves combine to make a wave with a larger amplitude.
Destructive Interferance The interference that occurs who
Created by: lh1008staloysius
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