what is the earth made out of?

Question

what is the world made out of?

Answer 1

Figure 40% iron, 40% silicon, 15%oxygen & 5% everything else for a first approximation. The 5% is more involved and on mostly at the upper mantle the crust which is only ~20% of the Earth.

Answer 2

Elements, often forming minerals.
Here's a video clip about it you might enjoy:

http://www.videojug.com/interview/fun-science-planet-earth#what-is-the-earth-made-of

Answer 3

look up a elemental periodic table for your answer.