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S8P4.a and S8P4.b

TermDefinition
wave a periodic disturbance in a solid , liquid, or gas energy is transmitted through a medium
medium a physical environment in which phenomena occur
mechanical wave a ave that needs a medium in which to travel
longitudinal wave a wave in which the particles of the medium vibrate parallel to the direction of the wave motion
transverse wave a wave in which the particles of the medium move perpendicularly to the direction the wave is travleing
compression part of the longitudinal wave where the particles bunch up closer together
rarefraction part of the longitudinal wave in which the particles expand and move apart
electromagnetic wave a wave that consists of electric and magnetic fields that vibrate at rights angels to each other
reflection the bouncing back of a ray of light, sound , or heat when the ray hits a surface that is does not go through
refraction the bending of a wave as the wave passes/between the two substances in which the speed of the wave differs
diffraction a change in the direction of a wave when the wave finds an obstacle or an edge , such as a opening
transmission the passing of light or or other form of energy through matter
absorption in optics, the transfer of light energy to particles of matter
Created by: Ashanti02
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