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Unit 7 Lessons 4-5

Wave Behaviors and Wave Interference - Important vocab from Unit 7 Lessons 4-5

TermDefinition
harmonic any multiple of an object's fundamental frequency
natural frequency the frequency that an object will naturally vibrate at when hit, dropped, strummed, etc.
fundamental frequency the frequency of the first harmonic; also called the natural frequency
node the location on a standing wave where the wave doesn't oscillate at all; this is where max destructive interference has occurred
anti-node the location on a standing wave where the wave oscillates the maximum distance from the resting point; this is where max constructive interference has occurred
diffraction occurs when waves bend around corners or pass through openings and spread out
refraction occurs when a wave bends as it crosses from one medium into another
reflection occurs when waves bounce off a boundary and goes in a new direction
absorption what happens when the amplitude of a wave gets smaller and smaller as it passes through a material
interference when waves interact, it is generally called this
principle of superposition the rule that determines how waves add together
constructive interference occurs when waves add up to make a larger amplitude
destructive interference occurs when waves subtract to make a smaller amplitude
standing wave a wave that doesn't travel from place to place. It is created by constructive and destructive interference of a reflecting wave.
resonance an occurrence whereby the natural frequency of an object is exactly in tune with a force applied to the object
Created by: davenportscience
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