What type of heat transfer occurs in the earth's interior?

inner core solid iron/nickel 5100-6378 km - conduction heat transfer.


outer core liquid iron/nickel 2890-5100 km - conduction and convection heat transfer


solid mantle rock 35 - 2890 km - conduction heat transfer and the temp change is 0.0003 kelvin per meter (not too good)


solid crust 0- 35 km - conduction heat transfer and the temp change is 0.01 kelvin per meter|||convection is how heat transfers from the Core through the Mantle to the Crust|||convection|||In the solid core by conduction.


In the liquid core by convection.


In the lower mantle heat is transferred by convection, but in the higher mantle where it becomes plastic, and through the crust, by conduction.