Question

Energy cannot be created or destroyed because of the law of ________.

Answer 1

Energy can neither be created nor destroyed; rather, it transforms from one form to another. For instance, chemical energy can be converted to kinetic energy in the explosion of a stick of dynamite. A consequence of the law of conservation of energy is that a perpetual motion machine of the first kind cannot exist.

Law of Conservation of Energy

Answer 2

The law of Conservation of Energy