Question: what is earth made out of

Reka Nagy answered on 8 Nov 2016:

Many things! The answer depends on where you look. Think of the Earth as a peach.
At the centre, it has a core which is very hot and consists mainly of metals, nickel and iron in particular.
The thick fleshy part of the peach corresponds to Earth’s mantle, which consists of a lot of rocks made up of , among other things, the atoms iron, silicon (this is what sand, glass, and the microprocessors in your computer and phone are made of!), aluminium (soda cans and air planes are made of this).
The outside layer that we can walk on (the skin of the peach) is called the crust, and it is made of similar stuff as the mantle – oxygen, silicon, aluminium, iron, magnesium , potassium, and sodium. A lot of it is covered in water.
Finally, the atmosphere that surrounds Earth is made mostly of nitrogen and oxygen.