Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Study Guide – Plate Tectonics Question 21.1 The Earth’s Interior Structure 1. What is the radius of the Earth, in kilometers and in miles? 2. Name the four major regions of the Earth, from “outermost” to “innermost”. 3. About how thick, in kilometers, is the Earth’s crust under the continents? Under the ocean basins? 4. (Chapter 21) Name ______________________Period _____ Answer What is Moho? 21.2 Continental Drift and Seafloor Spreading 5. What is meant by the term Pangaea? 1 6. 7. 8. What is remanent magnetism? Briefly state three types of evidence that support the concept of continental drift. What was missing from this concept? What is the Mid-Atlantic Ridge? 21.3 Plate Tectonics 9. What, in the context of plate tectonics, is a plate? 10. What and where are the lithosphere and the asthenosphere? 2 11. Give a brief explanation of the concept of isostasy. 12. Describe the three general types of plate boundaries. 13. What is a subduction zone? 14. At what type of plate boundary is rock consumed? Produced? Neither consumed nor produced? 15. When an oceanic plate collides with a continental plate at a convergent boundary, which one is subducted? Why? 21.4 Plate Motion and Volcanoes 16. Briefly, how are volcanoes explained in the theory of plate tectonics? 3 17. In what general regions on Earth are volcanoes found? 18. Give three examples of mountains formed by volcanic activity. 21.5 Earthquakes 19. Briefly, how are earthquakes explained in the theory of plate tectonics? 20. Name the two plates that border the San Andreas Fault. How are the plates moving relative to one another? 21. Distinguish between the focus and the epicenter of an earthquake. 22. Which type of seismic body wave cannot travel through a liquid medium? 4 23. What is measured by the Richter scale? What is measured by the Mercalli scale? 24. On what three factors does the damage caused by an earthquake depend? 21.6 Crustal Deformation & Mountain Building 25. Make a simple sketch of a fold, and show the difference between a syncline and an anticline. 26. Distinguish among a normal fault, a reverse fault, and a transform fault. 27. Name the type of plate boundary that is most likely to cause mountain building. 28. To which of the three principal types of mountains does each of the following belong: (a) Grand Tetons, (b) Appalachians, (c) Cascades, (d) Himalayas 5