<Tr> <Td> Th </Td> <Td> 26.4 × 10 </Td> <Td> 14.0 × 10 </Td> <Td> 124 × 10 </Td> <Td> 3.27 × 10 </Td> </Tr> <Tr> <Td> </Td> <Td> 29.2 × 10 </Td> <Td> 1.25 × 10 </Td> <Td> 36.9 × 10 </Td> <Td> 1.08 × 10 </Td> </Tr> <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> <Table> Earth's major plates <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Plate name </Th> <Th> Area 10 km </Th> </Tr> <Tr> <Td> Pacific Plate </Td> <Td> 103.3 </Td> </Tr> <Tr> <Td> African Plate </Td> <Td> 78.0 </Td> </Tr> <Tr> <Td> North American Plate </Td> <Td> 75.9 </Td> </Tr> <Tr> <Td> Eurasian Plate </Td> <Td> 67.8 </Td> </Tr> <Tr> <Td> Antarctic Plate </Td> <Td> 60.9 </Td> </Tr> <Tr> <Td> Indo - Australian Plate </Td> <Td> 47.2 </Td> </Tr> <Tr> <Td> South American Plate </Td> <Td> 43.6 </Td> </Tr> </Table>

Where does the original flow of energy on earth come from