If the moon was a piece of the earth,wouldnt it contain the same materials?

Answer 1

Yes, but actually it contains mostly materials from near the surface of the Earth. Before the Moon-creating crash, the Earth was partially separated into heavy elements (mostly iron) in the core, and lighter elements (silicate rocks, aluminum) near the surface. The big crash was apparently a somewhat glancing blow, and this knocked off a big chunk of outer crust to form the Moon. The remaining Earth has a thin skin of silicate rocks (we call these the continents) and a molten, heavy metal core that is fairly close to the surface. This is a good thing, because continental drift is one of the things that makes the Earth habitable. Without continental drift, heat from radioactive decay would build up in the mantle, and could periodically re-melt the entire surface crust, resulting in a reliquified planet. This would be bad for real estate values. Also, our civilization benefits from easy access to heavy metals, instead of having them buried beneath hundreds of miles of crust.

Answer 2

Yes, but not necessarily anything that is near the surface of the Earth. According to the theory this chunk was broken off an billions of pieces and coalesced into the shape we see now.

Answer 3

Yes and largely it does contain the same materials which is what went a long way to helping that theory gain prominence.

Answer 4

yes it would , but earth undertook some physical changes that shape it in the way it is like now while moon didn't as this happened after splitting

Answer 5

itn does but it does not have enough gravity to support an atmoshere.

Answer 6

Yes, it would.