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Where does the Earth's energy come from?

 Q:   Ask a Question about Where does the Earth's energy come from?       
Where does the Earth's energy come from? There is a basic law of physics that says that energy is never created or destroyed; it is simply transferred from one place to another or from one form of energy to another.

So all the energy that exists today has been around since the formation of the Universe.

The Earth's energy comes from heat trapped inside the Earth when it was originally formed, or from energy radiated out from the Sun. We cannot make energy, but we can extract it from coal, oil, fast-flowing rivers, nuclear fuel and various other sources. Even the wind can supply us with a source of energy.

On the move

For centuries people have tried to cheat the laws of physics by inventing perpetual motion machines. These are machines that would run forever without any power, or would produce their own energy. Both types of machine are impossible.AII machines need power to overcome friction and all the other forces that cause machinery to slow down. A law of physics says that energy cannot be created, so any machine that runs continuously must obtain its energy from somewhere else.


Tags: energy, earth, sun



Category: Science & Tech  - ( Science & Tech Archive)

Date Added: 13 December '11


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