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高中地理教材活动系列23

  • 2026-04-04 02:40:05
高中地理教材活动系列23

探究材料

      我国山川壮美,地表形态多姿多彩。有的地区石灰岩广布,发育出喀斯特地貌;有的地区波涛拍岸,发育出海岸地貌;有的地区高山巍峨,发育出冰川地貌。

    1.说一说,上述地表形态各有什么特点?主要分布在我国哪些地区? 

    2.想一想,究竟是什么原因导致上述地表形态有如此之大的差异呢?

探究目标

    1.了解喀斯特地貌、海岸地貌、冰川地貌的主要特点及在我国的典型分布地区,结合图文资料,理解不同形式外力作用对地表形态的影响。

    2.描述代表性的喀斯特地貌、海岸地貌、冰川地貌形成过程。

    3.感受祖国山河的壮美,理解自然条件与区域发展的关系,树立人地协调观。

探究建议

1.描述地貌特征,要联系区域环境特征,形成整体性思维,培养综合思维。

2.描述家乡或自己印象深刻的地貌特征,要注意表达的规范性。

参考答案

    1.喀斯特地貌地表群峰挺拔,峰丛林立;地下洞系密集交织,洞中流水潺潺,石笋、石柱、石钟乳等形态各异。中国的喀斯特地貌主要分布在西南部的碳酸盐岩出露地区,广西、贵州、云南东部所占的面积最大。

    有些海岸的海岸线蜿蜒曲折,岬湾交错,港湾分歧,岛屿星布。在这种海岸的海湾部位,可见有海滩、离岸堤、沙嘴、水下沙坝等;还有些海岸滩地宽广、滩坡平缓,岸上地势平坦,多沙洲、浅滩,潮间带宽阔,缺乏天然良港和岛屿;另外的一些海岸被植物所围绕或覆盖,主要为珊瑚礁海岸和红树林海岸两类。中国的海岸地貌主要分布在东部的沿海地区。

    冰川地貌有尖状金字塔形的角峰、刀刃状山脊、冰川槽谷(U形谷)、冰斗。中国的冰川地貌主要分布于西部的高山高原地区。北起阿尔泰山、天山、帕米尔高原,南至青藏高原、横断山区,这些巨大的高原高山上现代冰川和古代冰川都很发育。

    2.三类地貌景观所在地的自然环境存在较大的差异,外力作用的方式各不相同,喀斯特地貌是流水溶蚀和伴随的机械作用,海岸地貌是构造运动、海水运动、生物作用和气候因素等共同作用,冰川地貌是冰川对地球表面侵蚀、搬运和堆积作用,不同的外力作用方式造就了不同的地表形态。

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  1. CONNECT:[ UseTime:0.000709s ] mysql:host=127.0.0.1;port=3306;dbname=c_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000874s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000354s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000274s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000478s ]
  6. SELECT * FROM `set` [ RunTime:0.000191s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000569s ]
  8. SELECT * FROM `article` WHERE `id` = 461616 LIMIT 1 [ RunTime:0.000448s ]
  9. UPDATE `article` SET `lasttime` = 1775288914 WHERE `id` = 461616 [ RunTime:0.001248s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000210s ]
  11. SELECT * FROM `article` WHERE `id` < 461616 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000406s ]
  12. SELECT * FROM `article` WHERE `id` > 461616 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000524s ]
  13. SELECT * FROM `article` WHERE `id` < 461616 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000648s ]
  14. SELECT * FROM `article` WHERE `id` < 461616 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001244s ]
  15. SELECT * FROM `article` WHERE `id` < 461616 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001037s ]
0.077892s