七年级地理上册-第二章第四节《海陆变迁》课件-湘教版电子教案.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,海,陆,的,变 迁,第二章第二节,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,简称沧桑,出自我国古书神仙传麻姑。传说古代有个叫麻姑的仙女，自称曾经三次看到东海变成桑田。后人以沧海桑田这种海陆的变更，来比喻世事变化很大。,沧海桑田?,（海洋变陆地，陆地变海洋）,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,喜马拉雅地区发,现了海洋生物的化石,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,海底的古河流三角洲,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,荷兰的围海大坝,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,.,台湾与大陆有过亲密接触,福建渔民和台湾渔民都发现了许多相同的哺乳动物化石。如剑齿象、亚洲象、古菱齿象、熊、中国犀、马、猪、四不象鹿、斑鹿、山羊等。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,小结：地球表面形态处于永不停息的运动与变化之中。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,地球上的海陆轮廓是怎样形成的？七大洲四大洋是固定不变的吗,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,魏格纳与大陆漂移假说,大西洋,南美洲,非洲,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,海牛和鸵鸟在非洲和南美洲的分布,1大西洋西岸的许多生物有亲缘关系,2大西洋两岸的岩石、地层和褶皱也相吻合,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,大陆漂移假说,的主要观点：,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,大陆为什么会漂移呢,板块的运动,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中小学课件,主页 课件齐全,欢迎交流,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,哪些地方张裂？哪些地方相撞？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,板块张裂,东非大裂谷,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,板块发生相撞挤压时，地表会产生什么现象？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,板块相撞,山脉/岛屿,海沟,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,地中海、阿尔卑斯-喜马拉雅山地带,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,喜马拉雅山,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,青藏高原的形成过程,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,马里亚纳海沟,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,板块运动的时候会产生什么现象呢？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,鸡蛋壳被碰烈的时：,（1）蛋壳内的液体是从哪里流出来的？,（2）蛋壳被分成许多块，每块内部和边缘的稳定性如何？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,环太平洋火山地震带,阿尔卑斯-喜马拉雅火山地震带,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,请在“世界地形图”中找出：,喜马拉雅山脉,阿尔卑斯山脉,科迪勒拉山系,日本岛、印度尼西亚群岛,并说明形成原因,马里亚纳海沟,红海,地中海,东非大裂谷,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,练习,一。请用板块构造学说来,解释下列地形的形成：,1。东非大裂谷,2。大西洋,3。青藏高原,4。太平洋西部的深海沟岛弧链,（板块的相互张裂）,（板块的相互张裂）,（两个板块相互碰撞）,（大洋板块与大陆板块的碰撞）,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,大 陆 漂 移 的 证 据,魏格纳提出3方面的证据：,1大西洋西岸的许多生物有亲缘关系,2大西洋两岸的岩石、地层和褶,皱也相吻合,3在古气候方面，两极地区有热带沙漠的征兆，而且在赤道森林中找到了冰盖。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,喜马拉雅山的形成,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中小学课件,主页 课件齐全,欢迎交流,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,再见,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,