<P> The mean heat loss from Earth is 87 mW m , for a global heat loss of 4.42 × 10 W. A portion of the core 's thermal energy is transported toward the crust by mantle plumes , a form of convection consisting of upwellings of higher - temperature rock . These plumes can produce hotspots and flood basalts . More of the heat in Earth is lost through plate tectonics , by mantle upwelling associated with mid-ocean ridges . The final major mode of heat loss is through conduction through the lithosphere , the majority of which occurs under the oceans because the crust there is much thinner than that of the continents . </P>
<P> The mean heat loss from Earth is 87 mW m , for a global heat loss of 4.42 × 10 W. A portion of the core 's thermal energy is transported toward the crust by mantle plumes , a form of convection consisting of upwellings of higher - temperature rock . These plumes can produce hotspots and flood basalts . More of the heat in Earth is lost through plate tectonics , by mantle upwelling associated with mid-ocean ridges . The final major mode of heat loss is through conduction through the lithosphere , the majority of which occurs under the oceans because the crust there is much thinner than that of the continents . </P>
where does the original flow of energy on earth come from
where does the original flow of energy on earth come from
core
core