What is energy? Energy is the ability to do work. Nuclear energy Chemical Energy comes in different forms Heat (thermal) Light (radiant) Motion (kinetic) Electrical
Chemical Energy Energy released by a chemical reaction The food you eat contains chemical energy that is released when you digest your meal Wood, coal, gasoline, and natural gas are fuels that contain chemical energy
Mechanical Energy Energy that moves objects from place to place You use mechanical energy when you kick a ball or turn the pedals of a bicycle Other examples include water flowing in a stream, tires rolling down a road and sound waves from your iPod.
Electrical Energy Energy that comes from the electrons within atoms It can be generated at a power plant or inside a battery and can power everything from remote- controlled cars to refrigerators Lightning and static electricity are also forms of electrical energy
Heat (Thermal) Energy Energy created by the motion of atoms and molecules that occurs within an object Thermal energy exists when you heat a pot of water on a stove
Nuclear Energy Energy contained in the nucleus of an atom Nuclear energy is released when nuclei are split apart into several pieces, or when they are combined to form a single, larger nucleus
Light (Radiant) Energy Energy that can move through empty space The sun and stars are powerful sources of radiant energy The light given off by light bulbs and campfires are also forms of radiant energy
Energy Conversion All forms of energy can be converted into other forms of energy
There are two types of energy: Stored (potential) energy Working (kinetic) energy
Potential Energy Potential energy is stored energy and the energy of position.