battery, a device that produces an electric current due to changes to the materials inside it, complete circuit, a closed path through which an electrical current flows, electric current, the flow of electricity through a conductor, energy of motion, energy that results in movement, light energy, a form of energy that makes it possible for the eye to see, sound energy, energy that is created by vibrating matter, absorb, to soak up or take in, reflection, the bouncing of light off of a surface, refraction, the bending of light as it passes from one transparent material into another, prism, a transparent object that refracts light and separates white light in to a spectrum of colors

Chapter 4

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