Energy

Energy is the capacity of a physical system to do work. The units of energy are joules or ergs. There are different sorts of energy such as electrical, wind, thermal, nuclear, tidal, combustion, muscular, water,and anything else used voluntarily or involuntarily to make something occur. Energy is the motion of molecules. There are lots of different types of energy and that includes thermal energy ,chemical energy ,electric energy ,radiant energy , nuclear energy ,and magnetic energy. All of these forms of energy can be divided into two groups ; kinetic energy and potential energy. Other familiar types of energy are a varying mix of both kinetic and potential energy.