Sounds - energy produced by vibrations, Loudness - Volume or sound pressure produced by vibrations of an object, Conductors - Materials that allow energy to pass through them, Absorption - The taking in of light and not reflecting light, Electricity - The flow of electrical charges called electrons, Pitch - highness loudness of notes, Insulators - Materials that DONT allow energy to pass through, reflection - the bouncing back of light when it hits an object, Cloth - example of Insulator, Opaque - does not allow light to pass through, Quality - refers to the shape of sound waves, metals - example of conductor, Translucent - allows some light to pass, Medium - matter that allows sound to travel through it, Water and air - example of medium, three types of heat transfer - convection,conduction and radiation, Refraction - the bending of light, Transparent - allows all light to pass through, Sun - the most important source of heat, Transmission - passing of light through diff materials,

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