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Waves

Review of the characteristics of waves

TermDefinition
energy is the ability to do work
wave is a disturbance that transfers energy from place to place
vibrations are repeated back-and-forth or up-and-down motions
medium material through which a wave travels
mechanical waves waves that require a medium through which to travel
longitudinal waves waves that move the medium parallel to the direction in which the waves travel
transverse waves waves that move the medium perpendicular to the direction in which the waves travel
surface waves waves that occur at the surface between 2 mediums
amplitude height of the wave from crest to resting position or trough to resting position; or how compressed or rarefied the medium becomes; is a direct measure of a wave's energy
wavelength length from crest to crest or trough to trough
frequency is the number of complete waves that pass a certain point in a given amount of time
hertz (Hz) units that measure frequency
speed how fast or slow a wave travels; formula - wavelength X formula = speed
refraction bending of a wave caused by its change in speed when entering a new medium
reflection when a wave hits a surface and bounces back
diffraction when a wave moves pass a barrier or through a hole in a barrier, it bends and spreads out
constructive interference when 2 waves combine to make a bigger wave (larger amplitude)
destructive interference when the amplitudes of 2 waves combine to make a wave with a smaller wave (smaller or zero amplitude)
standing wave a wave that appears to be staying in one place, but are 2 waves that are interfering with each other
Created by: jtirby
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