The Earth's layers
There are 4 layers in the Earth. The inner core is in the very middle of the Earth. The outer core is a very thick liquid substance. The mantle is the biggest layer. It also has 2 parts which are the asthenosphere and the lithosphere. Last but not least is the crust, the thinnest layer. We stand on the crust. Find out more by reading the sub-pages under Layers of the Earth