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From Earth's rotation. Therefore, if tidal energy is used - or not used, but just wasted in friction - Earth will gradually rotate slower and slower.
Within our solar system it is. The earth does have stored energy in the form of heat, but it is assumed this came originally from the sun, when the earth was formed. The sun of course obeys the laws of physics which as far as we know apply to the whole universe, but one could wonder how the sun itself was formed, where the energy came for that. Radioactive materials within the earth also add to the heat which it contains, and some materials such as uranium can be made to give energy by nuclear fission. These sources of energy may have been formed by processes that occurred before our sun was formed. However as at present, all energy arriving at the earth's surface from outside the earth must come from the sun.
The energy from the Sun, solar energy drives all the process important to life on Earth.
Practically all energy on earth comes originally from the sun. A power source not derived from the sun is geothermal, which uses heat from deep under the ground.* Nuclear energy.* Geothermal energy.* Fuel cell energy.* kinetic energy* potential energy* thermal energy* gravitational energy* sound energy* light energy* electromagnetic energy* elastic energy
solar energy
From Earth's rotation. Therefore, if tidal energy is used - or not used, but just wasted in friction - Earth will gradually rotate slower and slower.
the sun
All earth's energy comes from the sun.
All energy in any ecosystem originally comes from the sun. the energy is then passed on to the producers. including plants, trees, and anything else that uses photosynthesis.
The Sun, unless it is geothermal energy (heat form the Earth's core) which originates from radioactive decay.
From the sun, gravity, and the heat from the interior of the planet.
It doesn't come all from one source. The energy come from wind, earth's rotation and ocean currents
Ultimately, it all comes from the Sun.
The S s s s sun
The Sun.
Because almost ALL sources of energy on Earth derived originally from sunlight. (Exceptions are gravity sources [earthquakes] and thermal vents.]
Because almost ALL sources of energy on Earth derived originally from sunlight. (Exceptions are gravity sources [earthquakes] and thermal vents.]