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6th Grade Ch 3

Waves

TermDefinition
wave a disturbance that transfers energy from one place to another without transferring matter
mechanical wave a wave that can travel only through matter
transverse wave a wave in which the disturbance is perpendicular to the direction the wave travels
crest the highest point on a transverse wave
trough the lowest point on a transverse wave
longitudinal wave a wave in which the disturbance is parallel to the direction the wave travels
medium a material in which a wave travels
compression the regions in a longitudinal wave where the particles in the medium are closest together
rarefraction the regions in a longitudinal wave where the particles in the medium are farthest apart
electromagnetic wave a wave that can travel through empty space and through matter
amplitude the maximum distance that a wave moves from its rest position
wavelength the distance from one point on a wave to the same point on the next wave
frequency the number of wavelengths that pass by a point each second
absorption the transfer of energy by a wave to the medium through which it travels
transmission the passage of light through an object
reflection the bouncing of a wave off a surface
law of reflection when a wave is reflected from a surface, the angle of reflection is equal to the angle of incidence
refraction the change in direction of a wave that occurs as the wave changes speed when moving from one medium to another
diffraction the change in direction of a wave when it travels by the edge of an object or through an opening
interference occurs when waves overlap and combine to form a new wave
Created by: lrlong7
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