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Unit 3 Waves
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17
Science
8th Grade
02/09/2013

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Term
reflection
Definition

when light bounces off an object

 

Term
refraction
Definition
when light   bends
Term
diffraction
Definition
when light goes around a barrier
Term
interference
Definition
when waves are travel through the same medium
Term
meduim
Definition
the material or substance which carries a wave
Term
wave
Definition
a rhythmic disturbance that transfers energy without transfering matter
Term
rarefaction
Definition
the parts of the medium are farther apart than normal
Term
transverse wave
Definition
where the matter in the medium moves up and down or back and forth at right angles to the direction the wave travels
Term
electromagnetic waves
Definition
waves that dont  require matter to  carry energy
Term
compressional waves
Definition
waves in which matter in the medium moves in the same direction as the wave
Term
wavelength
Definition
the distance between two identical points on a wave
Term
frequency
Definition
the measurement of  the number of waves that occurs per unit of time
Term
amplitude
Definition
the height of a transverse wave
Term
crest
Definition
highest point of a transverse wave
Term
trough
Definition
the lowest point of  a transverse wave
Term
heat transfer
Definition
when particles  move from a warmer object to a cooler object
Term
conductors
Definition
anything that can transmit heat
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