unveiling earths inner fire a journey through the layers from crust to core exploring the dynamics of our

crust magma geology science earth geophysics geography 039 layers structure crosssection interior molten rock temperature convection plate tectonics volcanoes mountains oceans biosphere hydrosphere lithosphere asthenosphere mesosphere outer core radius circumference mass density magnetic field rotation orbit atmosphere climate history future geological processes internal dynamic planetary mantle features currents generation composition formation systems education