Heat and pressure.
the layer in the earths suface that contains liquid rock is called: the inner core (mainly)\ outer core (some) and (parts) of the mantle.
The interior core contains many nuclear properties which gives of huge amounts of heat which then heats the core.
Geologists use seismic waves to map the Earth's interior. By studying how these waves travel through the Earth, geologists can infer information about the composition and structure of different layers beneath the surface. This helps them understand the different layers of the Earth, such as the crust, mantle, and core.
the mantle, which contains the lithosphere, asthenosphere and the mesosphere
scientists think that the earths core is made up of mostly iron, and contains smaller amounts of copper nickel.
Geologists believe that Earth's magnetic field is generated by the movement of molten iron and nickel within the outer core of the planet. As these metals flow, they create electric currents that generate the magnetic field. This phenomenon is known as the geodynamo theory.
Comits
The iron nickel core has been determined to actually exist from the examination of meteorites, from the gravitational field of Earth, and from the Earth's density in comparison to its volume.
Convection of liquid metals in the outer core creates the Earth's magnetic field.
Seismology - echo patterns of sound waves traveling through the earth.
Iron is the primary element that makes up most of the Earth's core. It accounts for about 85% of the core's composition, with the rest likely being nickel in combination with some lighter elements.
Scientists think the Earth's core contains iron because of the planet's magnetic field. Iron is a magnetic material, and the Earth's magnetic field is generated by the movement of molten iron in the outer core. Additionally, seismic waves and the density of the Earth indicate a high concentration of iron in the core.
Earth's core
i think it is about 75000 degrees hot
Heat and pressure.
Scientists believe Earth's core contains iron because of the planet's density and magnetic field. Iron is a dense material that would sink towards the core during the Earth's formation. The presence of iron is also supported by seismic wave behavior and the Earth's magnetic field, which is generated by the movement of molten iron in the outer core.