CH 8 1.List as many pieces of evidence as you can in support of the idea that continents have moved over Earth's surface. 化石 冰積物 地磁...etc. 2.What is the geographic extent of the lithosphere plate on which you live? 3.What is apparent polar wander? Draw pictures of Earth showing how the movement of a continent can produce apparent wander of the north magnetic pole. p.216 4.Why are most volcanoes that have been active in the last few million years postioned in or near the Pacific Ocean? 板塊有活動 5.How can a hot spot indicate the absolute direction of movement of a plate? 沿著由熱點產生島嶼的方向 6.Why do mid-ocean ridges form? 板塊張裂 7.Why do deep-focus earthquakes occur along subduction? p.223 8.Describe three kinds of faults? normal fault thrust fault strike-slip fault 9.What are the multiple driving forces of plate movement? p.226 共三點 10.What happens to slabs of subducted lithosphere? p.226 融化成為地函 11.Suppose that you were to encounter a well trained geologist who war unfairly imprisioned in 1955 and was deprived of reading materials until he was release last week. He entered prison firmly opposed to the idea that continent have moved large distances across Earth's surface. Given an hour of time , how would you convince this unfortunate geologist that continents have actually moved thousands of kilometers? Use the Visual Overview on p.208 as a guide to develop your argument. --

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