This document defines and describes different types of energy, including kinetic energy, potential energy, heat, electrical, chemical, light, and nuclear energy. Kinetic energy is the energy of a moving object defined by the equation KE=1/2mv2, where m is mass and v is velocity. Potential energy is energy stored in an object due to its position or state that can be released, including gravitational and elastic potential energy. The document also provides brief explanations of heat, electrical, chemical, light, and nuclear energy.