What is the structure of the planet Earth?

A solid inner core that has a radius of about 1200 km. consists of iron and nickel under great pressure, and therefore, despite the high temperature, this part of the core is solid. It is surrounded by a molten outer core with a radius of about 2300 km. which also consists of molten iron and nickel, but in addition to them, it may include some other elements. Behind the core is the mantle covering it, the thickness of which is about 2800 km. The mantle is composed primarily of minerals. Behind the mantle is the earth’s crust, or part of the lithosphere. The thickness of the oceanic crust is 5-10 km, and the thickness of the continental crust is up to 35 km in the plains and up to 75 km in the mountainous regions. The earth’s crust is composed of hard minerals and rocks.