Most of this energy is released during the decay of radioactive isotopes. To a lesser extent, this is residual heat, from the formation of Earth - gradually released as Earth's interior solidifies.
geothermal energy
It is called geothermal energy.
Where is hydroelectric energy generated?Hydroelectric energy, being electricity generated from a hydro (water) source, usually a hydro-electric dam, can be found anywhere on the electrical grid.
Generated by the sound source will be present in the soundwaves propagated from the surrounding air.
Much of the Earth's heat was leftover when the planet was formed
The two sources of energy are the sun and energy from the Earth's Interior.
The main source of energy that powers the sphere is electricity. This electricity can be generated from various sources such as fossil fuels, nuclear power, renewable energy sources like solar and wind, or even from batteries. The specific source of electricity depends on the location and infrastructure of the sphere.
The energy from Sun is the most important.
The sun
coal is found from charcoal..........a special kind of rock found about 4 feet below earths surface
The sun is the major external source of energy.
Electric energy generated from a water source is typically known as hydroelectric energy.
This source is ocean waters.
electron
sun
Nope the sun is the earths main source of energy
Sun
radiation & gravity
the sun