structure core earth. structure layers of the earth. the structure of the earth`s crust. earth cross section in space

burn center centeroftheearth composition core cross crust cutaway detail division earth earthmovement education energy geological geology geothermalenergy globe glowing heat hot illustration inner innercore inside interior internal iron isolated lava layer lithosphere lowermantle magma mantle map melt model nucleus outer planet schematic science section solid split structure study volcanoes