What is earth made out of?

The core is the centre of the earth and is made up of two parts: the liquid outer core and solid inner core. The outer core is made of nickel, iron and molten rock.

Rocks and the outer core is liquid?

The outer core is made of iron and nickel with some oxygen and sulfur. It is so hot that they melt into liquid. Because Earth is constantly spinning around, the liquids in the outer core move and flow like ocean currents.