<P> The total energy of a system can be subdivided and classified into potential energy, kinetic energy, or combinations of the two in various ways . Kinetic energy is determined by the movement of an object--or the composite motion of the components of an object - and potential energy reflects the potential of an object to have motion, and generally is a function of the position of an object within a field or may stored in the field itself . </P> <P> While these two categories are sufficient to describe all forms of energy, it is often convenient refer to particular combinations of potential and kinetic energy as its own form . For example, macroscopic mechanical energy is the sum of translational and rotational kinetic and potential energy in a system neglects the kinetic energy due to temperature, and nuclear energy which combines utilize potentials from the nuclear force and the weak force), among others . </P> <Table> Some forms of energy (that an object or system can have as a measurable property) <Tr> <Th> Type of energy </Th> <Th> Description </Th> </Tr> <Tr> <Td> Mechanical </Td> <Td> the sum of macroscopic translational and rotational kinetic and potential energies </Td> </Tr> <Tr> <Td> Electric </Td> <Td> potential energy due to or stored in electric fields </Td> </Tr> <Tr> <Td> Magnetic </Td> <Td> potential energy due to or stored in magnetic fields </Td> </Tr> <Tr> <Td> Gravitational </Td> <Td> potential energy due to or stored in gravitational fields </Td> </Tr> <Tr> <Td> Chemical </Td> <Td> potential energy due to chemical bonds </Td> </Tr> <Tr> <Td> Ionization </Td> <Td> potential energy that binds an electron to its atom or molecule </Td> </Tr> <Tr> <Td> Nuclear </Td> <Td> potential energy that binds nucleons to form the atomic nucleus (and nuclear reactions) </Td> </Tr> <Tr> <Td> Chromodynamic </Td> <Td> potential energy that binds quarks to form hadrons </Td> </Tr> <Tr> <Td> Elastic </Td> <Td> potential energy due to the deformation of a material (or its container) exhibiting a restorative force </Td> </Tr> <Tr> <Td> Mechanical wave </Td> <Td> kinetic and potential energy in an elastic material due to a propagated deformational wave </Td> </Tr> <Tr> <Td> Sound wave </Td> <Td> kinetic and potential energy in a fluid due to a sound propagated wave (a particular form of mechanical wave) </Td> </Tr> <Tr> <Td> Radiant </Td> <Td> potential energy stored in the fields of propagated by electromagnetic radiation, including light </Td> </Tr> <Tr> <Td> Rest </Td> <Td> potential energy due to an object's rest mass </Td> </Tr> <Tr> <Td> Thermal </Td> <Td> kinetic energy of the microscopic motion of particles, a form of disordered equivalent of mechanical energy </Td> </Tr> </Table> <Tr> <Th> Type of energy </Th> <Th> Description </Th> </Tr>

Sound is a form of what kind of energy