แก่นโลก มีองค์ประกอบเป็นธาตุเหล็ก แ

Naughty world. There is an iron elements. The world is divided into two layers: outer layer with a thickness of hard core from the surface of the Earth is approximately 2900 – 5000 km, composed of iron and nickel in molten condition and temperature of approximately 6200-6400 with a temperature of approximately 4300-6200 and have tremendous pressure. Make the best solid state.

Earth's core
is composed of iron. Divided into two phases: The outer core of the Earth The thickness of the earth's surface, about 2900-5000 km, consisting of iron and nickel in molten condition and temperatures around 6200-6400 with a temperature of about 4300-6200 and the pressure is enormous. This makes it a solid.

Core
elements are divided into an iron 2 I include core outer layer has a thickness of from about 2 ผิวโลก, 5 000 kilometers, 900 - Consisting of iron and nickel in melting and temperatures around 6200 - 6400 have อุณหภูมิประมาณ, 4300 6 200 -, and the enormous pressure. Make this is solid state.