What is the law of conservation of energy?

Question

What is the law of conservation of energy?

Answer 1

The Law of Conservation of Energy states that

Energy is neither destroyed nor created.

[Energy just transfers from one substance/matter to another in different forms (ex. solar to electrical)]

Answer 2

the law of conservation of energy states that energy cannot be created it can neither be destroyed.Energy can only change its form i.e from one form to another

Answer 3

You can't conserve energy. It is always flowing. And also it is only a law in physics, not globally.

Answer 4

You need to take a class other than physics if you can't answer this question.

ENERGY CAN NOT BE CREATED OR DESTROYED.... it can only change forms

Answer 5

The Kyoto Protocol??

Answer 6

In physics, the conservation of energy states that the total amount of energy in any isolated system remains constant but can't be recreated, although it may change forms, e.g. friction turns kinetic energy into thermal energy. In thermodynamics, the first law of thermodynamics is a statement of the conservation of energy for thermodynamic systems, and is the more encompassing version of the conservation of energy. In short, the law of conservation of energy states that energy can not be created or destroyed, it can only be changed from one form to another.

Answer 7

Nevlin's answer is correct with the exception of nuclear reactions, where energy is actually created (and matter destroyed).