Geo-exam1sq - Geol 100 Exam I Study Guide I. Scientific...

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I. Scientific Method, Uniformitarianism and Catastrophism A. Uniformitarianism and Catastrophism: What are they, and their implications for (1) age of the Earth (2) processes that form the Earth. Uniformitarianism = States that physical processes we observe today also operated in th e[ast and were responsible for the formation of the geologic features we see in outcrops. “The presense is the key to the past.” The universe is knowable. Hutton, Lyell, and Cuvier: how did they contribute to the above. Hutton = Challenged the assumption that geologic time was not much longer than human history, and that the Earth essentially formed as we see it today. He observed rocky crags of his native land. Influenced by Isaac Newton and ideas from the Enlightenment. Is known as the “father of Geology.” Lyell = Cuvier = B. Scientific Thought: What is the fundamental assumption of science? Laws are simple statements about how universe works Theories are robust, paradigms of science. They explain all the existing data II. Nebular Hypothesis A. Initial conditions of the hypothesis B. Forces acting in the nebula to form the solar system C. Accretion of the planets in the solar system: Terrestrial vs. Giant planets: The effect of the thermal gradient and solar wind on the mass and density of the planets Accretion of Terrestrial Plants : Mercury Venus Earth Mars and Asteroid Belt Close to sun = hot during accretion Only refractory compounds are solid (rocks) Solar wind blows light particulars away. Planets too small to retain light elements
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Geo-exam1sq - Geol 100 Exam I Study Guide I. Scientific...

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