11. Where is the largest continental rift in the world? A. Southern California B
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11. Where is the largest continental rift in the world? A. Southern California B. Germany C. East Africa D. South America 12. Which type of arc is the most apparent sign of a subduction zone and is also called a volcanic arc? A. magmatic B. back C. island D. fore 13. Earthquakes do not occur at which type of margin? A. transform B. divergent C. passive D. convergent 14. Which is the correct description of orogenesis? A. the growth of mountain ranges as plates subduct B. the C. the rising of ancient continental crust to the surface of the Earth D. the melting of crustal materials to form magma merging of a smaller plate with a larger continental mass 15. Continents consist of what two major structural components? A. shields and platforms B. mountain belts and cratons C. ocean basins and plates D. terranes and mantlesExplanation / Answer
11. East africa has the largest continental rift in the world
12. magmatic arc is the most apparent sign of subduction zone
13. according to the plate tectonic theory they do not occur at passive type of margin
14. orogenis is the growth of mountain ranges as plates subduct.
15. two major structural components are mountain belts and cratons.
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