What is the layer of molten iron and nickel that surrounds the inner core called?

The layer of molten iron and nickel that surrounds the inner core is known as the outer core. This region of the Earth is characterized by its liquid state, distinguishing it from the solid inner core which is primarily composed of iron and nickel in a solid form due to the extremely high pressures found at the center of the Earth. The outer core is crucial in the generation of Earth's magnetic field through the movement of the liquid metal, a process known as the geodynamo. In contrast, the inner core is solid, the crust is the thin outer layer of the Earth where we live, and the asthenosphere is a portion of the upper mantle beneath the lithosphere, which plays a role in tectonic plate movement but does not consist of molten metal.