- What are polymorphs? - What are the inner or rocky planets? What are the outer planets? - What is a subduction zone? - Give a brief explanation of Earth's history during the eons: Hadean, Archean, Proterozoic, and Phanerozoic?

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
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In your own words, free of plagiarism, answer each of the following questions in a couple of sentences. 

- What are polymorphs?

- What are the inner or rocky planets? What are the outer planets?

- What is a subduction zone?

- Give a brief explanation of Earth's history during the eons: Hadean, Archean, Proterozoic, and Phanerozoic?

Expert Solution
Step 1

Polymorphs: 

  • In mineralogy the term 'Polymorphs' refers to an existence of solid material that has ability to form one or more crystals. 
  • Generally the polymorphs is the result of one mineral that can be existed in two or more than crystal form under the influence of some physical conditions of pressure and temperature. 
  • Example:- Polymorphism is a pairs of minerals of some  inorganic compounds like calcite acid aragonite which are forms of Calcium carbonate that helps to form of polymorphs of graphite. 
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