1._____________in the interior of the earth can be classified as primordial and radiogenic heat 2.The thermal energy is released as a result of spontaneous_______ is called radiogenic heat while the internal heat energy accumulated_________ by in a planet during is a few million years of evolution is called primordial heat. 3.There are three processes can transfer heat_______,_______and radiation. 4.________governsthe thermal condition and almost entire solid portion of the earth and plays a very important role in the lithosphere. 5._________involves transfer of heat by the movement of mass which is a more efficient means of heat transport in earth compared to pure conduction. 6._______is this list important mode of heat transport in the earth. 7.convection current is relevant to the movement of_______ because the heat builds up pressure underneath the crust. 8.the_____of the core is transferred to the surface of the earth and the lower levels of ocran by conduction. 9.Air molecules come in contact with the warmer surface of the land or ocean,resulting to the increase of its________. 10.the area where subduction occur is called_______.​