I will be covering the earths layers.
The Crust
The Mantle
The outer core
The inner core
The Mantle
The mantle is the hottest layer and it is liquid and solid. It is where the lava of volcanoes come from. Near where the crust meets it, it is about 1000 Celsius. And near where it meets the core it is 3700 Celsius.
The outer core
The outer core is made from melted metal (iron)
The inner core
Since we have never been in the inner core (Or anywhere else but the crust), scientists believe the inner core is solid iron