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10F_ReviewQ_Exam1 - Review questions for Exam I All of...

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Review questions for Exam I All of these questions can be answered very briefly INTRODUCTORY STUFF (1) What are the four components (spheres) of the earth? Can you think of a way that each interacts with the other? (2) How do igneous rocks form? What is the difference between a magma and a lava? (3) What is a metamorphic rock? (4) How do sedimentary rocks form? (5) What is the difference between the ideas of Catastrophism and Uniformitarianism? What does each imply about the age of the earth? (6) What is the difference between a scientific theory and a hypothesis? (7) What is the age of the earth, as believed by most scientists? (8) What is the approximate radius of the earth? (9) What is isostasy? Draw two blocks of crust with different thicknesses “floating” in mantle. Label the upper surface and crust/mantle boundaries. INTERIOR OF THE EARTH AND PLATE TECTONICS (1) What are three lines of evidence that suggest that the continents were together about 220 million years ago?
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