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Unit1Light6thgrade

Light and its Interactions with Matter

TermDefinition
light wave transverse electromagnetic waves that can but do not require a medium (matter—solid
transmission a wave passing through an object or through empty space with no disturbance (in a straight line
absorption when a wave is taken in (absorbed)
reflection when a wave is bounced off an object
refraction the bending or scattering of waves
diffusion scattering of waves in all directions
diffraction The bending of a wave as it moves around an obstacle or passes through a narrow opening
dispersion The separating/scattering of a wave into its different frequencies (such as colors in a prism)
electromagnetic spectrum a range of waves that can travel through matter or empty space and is related to electric and magnetic fields (includes visible light--colors)
visible light wavelengths on the electromagnetic spectrum in the colors of the rainbow (ROYGBIV) shorter than infrared but longer than ultraviolet. Red=longest
Transparent material that allows light to be transmitted in a straight line
Translucent material that refracts light
Opaque material that may absorb or reflect light
independent variable the one factor that is changed (manipulated) by the experimenter (cause)
dependent variable The outcome factor (result); the variable that may change in response to manipulation of the independent variable.(effect)
Created by: akguidry
 

 



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