Some common examples of energy forms include chemical, electrical, mechanical, thermal, radiant and nuclear energy. Energy cannot be made, but it can be harnessed and transformed from one form to another.
Energy can be used to achieve various objectives, including powering machines and illumination. To effectively achieve this purpose, energy may have to be converted into various forms. Mechanical energy is used when dealing with movement, while chemical energy is found in substances such as gasoline and coal. When nuclei of atoms are split, the result achieved is called nuclear energy, and when molecules move or vibrate, thermal or heat energy is produced.