"Reflection", "The bouncing of a wave off of a surface." "Refraction", "When the speed of light changes as it transmits from one medium to another, which causes the direction of the light to change." "Transmission", "The passage of a wave through a medium. Mechanical waves can move through liquids and gasses." "Absorption", "The transfer of energy by a wave to the medium through which it travels." "Translucent", "When a material allows most of the light to pass through it and objects can appear blurry when looking through it." "Transparent", "When a material allows almost all of the light to pass through it and objects can be seen clearly through it." "Opaque", "When a material absorbs most of the light that hits it and objects cannot be seen through it" "Prism", "A 3-dimensional shape that has 2 identical shapes facing each other." "Plane Mirror", "A flat reflective surface that can reflect light and is used to identify an incident ray and reflected ray." "Convex Lens", "A lens that refracts light inwards because of its shape. This lens is thin on the edges and thick in the middle."
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