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https://www.teacherspayteachers.com/.../Energy-Forms-of-Energy-Lessons-128279 What Is Energy? Forms of Energy Energy forms are either potential or kinetic. Potential energy comes in forms that are stored including — chemical, gravitational, mechanical, and nuclear. Kinetic energy forms are doing work — like electrical, heat, light, motion, and sound. Forms of Energy Basics What is energy? Scientists define energy as the ability to do work. Modern civilization is possible because people have learned how to change energy from one form to another and then use it to do work. We use energy to move cars along roads and boats through water, to cook food on stoves, to make ice in freezers, and to light our homes. Forms of energy Many forms of energy exist, but they all fall into two basic categories: Potential energy Kinetic energy Potential energy Kinetic energy Kinetic energy is the motion of waves, Potential energy is stored energy and the energy electrons, atoms, molecules, substances, and of position. objects. Chemical energy is energy stored in the bonds Radiant energy is electromagnetic energy that of atoms and molecules. Batteries, biomass, travels in transverse waves. Radiant energy petroleum, natural gas, and coal are examples of includes visible light, x-rays, gamma rays, and chemical energy. Chemical energy is converted radio waves. Light is one type of radiant to thermal energy when people burn wood in a energy. Sunshine is radiant energy, which fireplace or burn gasoline in a car's engine. provides the fuel and warmth that make life on Mechanical energy is energy stored in objects earth possible. by tension. Compressed springs and stretched Thermal energy, or heat, is the energy that rubber bands are examples of stored mechanical comes from the movement of atoms and energy. molecules in a substance. Heat increases with Nuclear energy is energy stored in the nucleus increases in the speed that these particles move. of an atom—the energy that holds the nucleus Geothermal energy is the thermal energy in the earth. together. Large amounts of energy can be released when the nuclei are combined or split apart. Motion energy is energy stored in the movement of objects. The faster they move, the more energy is stored. It takes energy to get an Gravitational energy is energy stored in an object moving, and energy is released when an object's height. The higher and heavier the object, the more gravitational energy is stored. object slows down. Wind is an example of When a person rides a bicycle down a steep hill motion energy. A dramatic example of motion and picks up speed, the gravitational energy is energy is a car crash—a car comes to a total stop and releases all of its motion energy at converting to motion energy. Hydropower is another example of gravitational energy, where once in an uncontrolled instant. gravity forces water down through a Sound is the movement of energy through hydroelectric turbine to produce electricity. substances in longitudinal (compression/rarefaction) waves. Sound is produced when a force causes an object or substance to vibrate. The energy is transferred through the substance in a wave. Typically, the energy in sound is smaller than in other forms of energy. Electrical energy is delivered by tiny charged particles called electrons, typically moving through a wire. Lightning is an example of electrical energy in nature. http://www.eia.gov/KIDS/energy.cfm?page=about_forms_of_energy-basics