Unit 5 Waves
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28 Terms
wave
traveling energy
mechanical waves
waves that use matter to transfer energy
medium
the matter through which a mechanical wave travels
electromagnetic wave
waves that do not require a medium
crest
the top part of a wave
trough
the bottom part of a wave
amplitude
the height of a wave
frequency
the number of waves that pass a point in a certain period of time
wavelength
the distance between wave peaks
sound waves
vibrations that travel through matter
compressions
particles pushed together in a wave
rarefaction
particles spread apart in a wave
pitch
how high or low a sound is
reflection
when a wave bounces off surfaces
absorption
when a material takes in sound energy
transmission
when a wave passes through material
signal
information being sent from one place to another
analog signal
signal sent through continuous waves
digital signal
signal sent through patterns of 1s and 0s
radio waves
the longest wavelength on the electromagnetic spectrum
visible light
the wavelength that is visible to the human eye
gamma rays
the shortest wavelength on the electromagnetic spectrum
radiant energy
energy carried by electromagnetic waves
transparent
light passes through
translucent
light partially passes through
opaque
no light passes through
refraction
light bending as it passes through different mediums
diffraction
when light spreads or bends around obstacles