The Earth is not only the planet we call home, but is also the only planet in the solar system that is capable of supporting life. It is home to millions of different species, including over 6 billion humans. It is the fifth largest planet in the solar system and is located third from the sun. There are many different layers of the Earth that are all made up of different materials.
What is the Earth made of?
If you were able to break Earth down into basic elements you would find that is consists of; iron (32%), oxygen (30%), silicon (15%), magnesium (14%), sulfur (3%), nickel (2%), calcium (1.5%), and aluminium (1.5%). The remaining mass of the Earth consists of trace elements.
Each section of the Earth consists of different amounts of these elements. The atmosphere consists of nitrogen, oxygen, argon and carbon dioxide. The crust is outer layer of the Earth and it consists mostly of oxides (chemical compound that contains oxygen). The main oxides that can be found in the crust are silica, alumina, lime, magnesia and iron oxides. The mantle lies beneath is crust, to a depth of 2890 km, and is rich in oxygen, silicon, iron and magnesium. The core of the Earth is the deepest part of the Earth and is broken into the inner and outer core. Scientists believe that the core is made up of mostly iron (89%) and smaller amounts of nickel and sulfur.