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johnscience ch.5

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wave
a way of transferring energy from one pace to another without matter being transfered
peak
the highest point of a wave
wave length
the distance between two peaks in A wave
amplitude
the height of a wave a measured from the midline of a peak
medium
the matter through witch energy waves travel
freaquency
the number of wave peaks that pass by a given point every second
pitch
the highness or lowness of a sound as determined by the wave frequency
transverse wave
a wave in which the vibration is side to side or up and down
longitudinal wave
A wave in which the vibration is forward and backward
visible spectrum
the frequencys or wave lengths of light that can be seen including all the colors of the rainbow
audio spectrum
the frequencies or wavelengths of sound that can be heard, including the lowest pitch to the highest pitch
electromagnetic radiation
a form of energy that has both electrical and magnetic properties
electromagnetic spectrum
All of the wavelength range of electromagnetic radiation
transparent
describes material that light passes through easily
translucent
describes materials that some light passes through producing blurred images
opaque
describes materials that light does not pass through
refract
the bending of light or sound waves as they pass through different mediums
focus
to bring energy to a point
convex lens
a lens that focuses light
concave lens
a lens that causes light to spread out
reflect
to bounce energy off of an object
porous
describes materials full of tiny openings
transmitter
device that converts information into a signal
receiver
a device that receives a signal and converts it into information
amplify
increase the volume of a sound
radio spectrum
the wavelengths used in communications including radio and television