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vocab 4:1- 4:3


mechanical wave a wave that travels only through matter
electromagnetic wave a wave that can travel through empty space or through matter
transverse wave a wave in which the disturbance is perpendicular to the direction the wave travels
longitudinal wave a wave that makes the particles of a medium move back and forth parallel to the direction the wave travels
frequency the number of wavelengths that pass a point each second
amplitude maximum distance a wave varies from its rest position
refraction he change in direction of a wave as it changes speed, moving from one medium into another
radio wave a low-frequency, low-energy electromagnetic wave that has a wavelength longer than about 30 cm
infrared wave an electromagnetic wave with a wavelength shorter than a microwave but longer than light
ultraviolet wave an electromagnetic wave with a slightly shorter wavelength and higher frequency than light
transparent a material that allows almost al of the light striking it to pass through and through which objects can be seen
translucent a material that allows most of the light that strikes it to pass through but through which objects appear blurry
opaque a material through which light does not pass
intensity is the amount of energy that passes through a square meter of space in one second
compression region of a longitudinal wave where the particles of a medium are closet together
rarefaction region of a longitudinal wave where the particles are farthest apart
pitch the perception of how high or low a sound seems
decibel the unit used to measure sound intensity or loudness
Created by: royerbre4038