The compositional layers of the Earth are the Crust, the Mantle, and the Core. The Core is subdivided into a molten outer core and solid inner core.
Physical state is determined by the combined effects of pressure and temperature.
Three fluid spheres surround the rocky portion of the Earth. PPT Slide Continents and ocean basins differ in composition, elevation and physiographic features. According to Wegner, the continents are sections of a past super continent called Pangea, which broke apart and the fragments plowed through the oceanic crust, to their present locations PPT Slide Sea floor spreading demonstrates that the sea floor moves apart at the oceanic ridges and new oceanic crust is added to the edges. The geomagnetic field is the magnetic field of the Earth. Because of their paleomagnetism, rocks of the sea floor influence the magnetic field recorded by magnetometers.