Which layer is thought to generate the magnetic field? Check out this temperature simulation of the layer here: . Take a journey to the center of the Earth—as far as its outer core, at least—and you'll find a swirling mass of metal, mainly iron, kept in liquid form by the region's intense heat. Temperature and pressure variations across this layer cause the melted metal to rise in hotter zones and to sink in cooler ones—convection movements that gener Group of answer choices Crust Mantle Core