Earth's interior is structured into three main layers: the crust (the thin, outermost solid layer), the mantle (a thick, predominantly solid but slowly-flowing layer, the source of convection currents driving plate movement), and the core (a liquid outer core and solid inner core, generating Earth's magnetic field).

• ›This layered structure is inferred primarily through seismic wave analysis, since direct observation of Earth's deep interior remains impossible
• ›The mantle's slow convective flow is THE underlying driving mechanism for plate tectonics, directly connecting this structural content to dynamic geological processes