Reflect, Light that allows us to see objects, Reflection, When light bounces off of an object, Refraction, Bending of energy waves as they pass from one substance to another, Transparent, Allows ALL light to pass through, Translucent, Allows some light to pass through, Opaque, Does NOT ALLOW any light to pass through, Light Energy, Energy that allows us to see, Soft Objects, Absorb sound and lower them, Hard Objects, Reflect sound and cause an echo effect, Vibrations, A series of small, fast movements back and forth or from side to side, Sound Energy, Energy that travels as waves through the air or water and vibrates the eardrums., High Pitch, Faster vibrations, Low Pitch, Slower vibrations, Frequency, the number of times a wave is repeated , Amplitude, The volume of a sound, Absorb, Soak up or take something, Interpret, Explain the meaning of, Material, Matter from which a thing is or can be made, Model, Representation of a structure and how it works, Object, Something that can be touched and seen.

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