The structure of our planet, Earth, includes seven primary layers. The inner core is a solid one, which is made mainly of iron and nickel. Its radius is 1220 kilometers, and it is boiling. However, the Earth’s outer core is recognized as a liquid layer. Still, its components are the same as the inner core, meaning iron and nickel are just in a liquid form. It wraps the inner core and is located 2880 – 5180 kilometers below the surface. It means its thickness is 2300 kilometers, almost two times thicker than the inner core. As for the upper and lower mantle, they together create the thickest layer of the Earth. It starts 30 kilometers beneath the surface and is approximately 3000 kilometers wide. Both parts of this layer are made of iron, silicon, and magnesium, so the inner mantle together is semi-solid and hot, while the upper is cold and rigid.
Moreover, the asthenosphere is the layer known for its slipperiness. As we know, it is the mantle’s part that is sleek enough for tectonic plates to slide on it. This Earth’s part is boiling holt and, at the same time, weak as it is made of melted rock. The planet’s crust is thin, brittle, and light since it is made of aluminum and oxygen. It has a different thickness under various tectonic structures, and its highest thickness is 100 kilometers. The last layer is the lithosphere is not smooth and is broken into tectonic plates. It is also the upper layer of the planet, and its components are the crust and the upper mantle. As a result, the lithosphere is not thick, though it is still solid and somewhat brittle.