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Transcript
Forms of Energy Graphic Organizer E.Q. “How are potential & kinetic energy related?” S8P2(b) “How do the different forms of energy compare?” S8P2(c) - What is Energy? The ability to do work and/or cause change. Unit: Joules Energy moves in waves. Waves are caused by vibrations. Energy can change from one form to another without losing or gaining mass (Law of Conservation of Mass). Heat is a byproduct of almost all changes in forms of energy. Types of Energy: There are two (2) types of energy. Potential Energy: Stored energy Kinetic Energy: Energy in motion. There are 7 Forms of Energy Chemical energy is stored in the bonds of molecules. Mechanical energy is the total energy in any object. It is the combined potential and kinetic of an object. Examples: food, fuel, battery Examples: Anything in motion has Mechanical energy. Nuclear energy is stored in the nucleus of atoms. Two ways to release nuclear energy: Fission – split atom (nuclear power plant) Fusion – joining atoms (hydrogen in the sun) Examples: sun, nuclear bomb Electrical Energy: caused by movement of electrons. A battery creates electrical energy by releasing it’s stored chemical energy. Examples: Any object with a plug, Wiring, or circuit board uses electrical energy. Forms of Energy Forms of Energy Electromagnetic Energy: (visible Light) is caused by the movement Of electrically charged particles. Light is a wave that can move through Space. Examples: light bulb, computer Screen When you pull back a guitar string, you give the string the potential to make a sound. Sound Energy: is caused by vibrations of air. Sound cannot exist in space. It must have a medium to vibrate through. Both potential and kinetic Examples: radio, vocal cords, guitar string Thermal Energy (heat): caused by Movement of particles. Heat moves from warmer to cooler Object. Example: heater, stove, light bulb Heat is a byproduct.
