Plate Tectonics I

Plate Tectonics I - MARS 1010 Dr. Yager / Dr. Teare-Ketter...

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MARS 1010 Dr. Yager / Dr. Teare-Ketter Plate Tectonics I: The observational basis for the theory Read Chapter 3 in Sverdrup and Armbrust Objectives: 1. Discuss how the six data sets discussed in class (outlined on the following page) each contributed to the development of the theory of plate tectonics. See last page 2. How did the development of Plate Tectonic theory exemplify successful application of the scientific method? Give an example of the scientific method in action. Plate techtonics incorporates the ideas of continental drift and sea floor spreading in a unified model. When it was just an idea, it was researched and the hypothesis was renewed over and over again. It is still studied today. 3. Define density and describe how it relates to the layers of the earth. Density is a measure of mass per unit volume and usually given in g/cm^3. Earth’s high average of density requires that the material below the surface have much greater density. This is true all the way to the core. 4. Describe/draw a cross-section of the Earth (with a length scale) and be able to label and list the chemical characteristics of the layers including: See page 54 A. Atmosphere B. Ocean C. Crust The crust is earth’s outermost layer; the boundary between crust and mantle is a chemical one; rocks on either side have different chemical composition. This is called the mohororicic discontinuity (MOHO).
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This homework help was uploaded on 04/13/2008 for the course MARS 1010L taught by Professor Jager during the Fall '07 term at UGA.

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Plate Tectonics I - MARS 1010 Dr. Yager / Dr. Teare-Ketter...

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