Earth's internal heat is the result of the radioactive decay of isotopes that have been present since the Earth was formed. This source of heat, of course, will be exhausted eventually. Note that this energy source is one of two main exceptions to the general rule that all the energy we get is from the Sun. The other exception is tidal energy, which is the result of Earth's rotation.
Originally it was heated by impacts. But all this heat was rapidly lost billions of years ago shortly after the period of high impact rates ceased.
Currently it is heated by radioactive decay of uranium and its radioactive daughter isotopes in the metallic core and lower mantle.
Obviously, the sun heats an lights the earth. Without the sun. we could not see anything and we would be FREEZING. Unless of course we had electric heaters.
The sun. The UV rays are lessened by the atmosphere
From the sun.
The Earth gets its heat from the sun.
HAZE
Geothermal Energythe term for deriving electricity from the heat of the earth is "Geothermal" (literally geo = earth and thermal = heat). Iceland gets a huge portion of its electricity from geothermal energy
rotation of the earth's core
geothermal.
geothermal energy
Geothermal pertains to the internal heat of the earth.
It gets to the Earth by RADIATION.
HAZE
Geothermal Energythe term for deriving electricity from the heat of the earth is "Geothermal" (literally geo = earth and thermal = heat). Iceland gets a huge portion of its electricity from geothermal energy
rotation of the earth's core
It gets to the Earth by RADIATION.
Earth gets heat and light from the Sun. It's heat also comes from the Earth's core.
sun
At Volcanoes.
earth's internal heat
earth's internal heat
The Sun and the earth's internal heat