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Energy Unit Test What are the two types of energy? What is Work? Define kinetic energy. What two variables affect the amount of kinetic energy that an object has? What happens to kinetic energy as mass and speed increase? Define potential energy. What is meant by energy of position? What force affects potential energy due to position? What is meant by stored chemical energy? Give an example of potential energy due to position and potential energy due to chemical composition. How is the compression of an object considered potential energy? Students should be able to identify examples of kinetic and potential energy. According to the Law of Conservation of Energy, energy is never lost. In every transformation, some energy is always transferred into thermal energy (heat). This is called a byproduct. Sound can also be a byproduct. For example, a blender creates noise and heat when the blade is spinning, but that is not the purpose of a blender. Therefore, heat and sound are byproducts. Burning a candle is Chemical to Electromagnetic Walking across a floor is Chemical to Mechanical Photosynthesis is Electromagnetic to Chemical Battery making clock hands move is Chemical to Electrical to Mechanical Burning firewood is Chemical to Thermal and Electromagnetic and Sound A swing will eventually stop because of friction A blender blending food is Electrical to Mechanical A hydroelectric power plant turns Mechanical to electrical energy Shouting into a cave is you turning mechanical energy into sound Turning on a radio is turning electrical energy into sound A lamp turns electricity into Electromagnetic Eating provides you with chemical energy to move. All animals turn chemical energy into mechanical energy when they move. Burning fossil fuels releases energy that originally comes from the sun because fossil fuels come from plant and animal remains. You will need to know the definitions of the forms of energy found in your notes