Answered: Why is it that the metallic core of a…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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32) Why is it that the metallic core of a rocky body such as Earth is primarily composed of iron and not some denser material such as gold?

A. Iron forms clumps due to extra-cellular polymeric substances and planets then form around these clumps.

B. Gold has been extensively mined by humans so it is now depleted from the core.

C. The heavier elements such as gold have much lesser cosmic abundances than iron, iron is more than 1 million times more abundant in the universe

D. Iron is very strong, so it resists the impacts common in turbulent early solar systems, thus forming the cores of planets.

Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

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