There is convection in the mantle, conduction in the mantle, advection when hot rock is forced upwards, and radiation when radioactive elements decay they release energy.
the sources would be gravity which causes friction, and radiation. energy is then moved via convection / conduction / advection / radiation
I believe it is convection, with a little conduction mixed in for good measure.
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There is convection in the mantle, conduction in the mantle, advection when hot rock is forced upwards, and radiation when radioactive elements decay they release energy.
the sources would be gravity which causes friction, and radiation. energy is then moved via convection / conduction / advection / radiation
I believe it is convection, with a little conduction mixed in for good measure.