七年级地理上册2.2《众多的人口》课件1中图版.ppt

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1、第二节 众多的人口,思考:,一、世界上人口最多的国家,1、人口:12.95亿 居世界第一位。,阅读课本P43阅读材料人口自然增长率,人口出生率,人口死亡率,人口自然增长率,=人口出生率,人口死亡率,参照下图完成课本P45的绘图活动。,2、人口增长快,在日常生活中,你曾经遇到哪些因人口过多所造成的麻烦?,想一想:,3、人口问题,人既是生产者,又是消费者。,就业压力增大,住房条件差,生活垃圾成堆,我国自然资源总量和人均量居世界的位次(2000年),中国每十万人中拥有的各种受教育程度人数,二、基本国策实行计划生育,1、基本内容:控制人口数量,提高人口素质。,2、具体要求:晚婚、晚育、少生、优生,阅读

2、课本P47阅读材料“关注老龄化问题”,了解人口老龄化问题。,人口老龄化,三、人口分布,1、人口密度=,人口总数/面积(人/千米2),计算:依据图C中的国家和陆地面积数据,算一算这五个国家的人口密度。,135,339,30,110,20,57%,43%,94%,6%,2、人口分布的特点:东多西少,人口地理界线,第二节 众多的人口,一、世界上人口最多的国家,1、人口:12.95亿 居世界第一位。,2、人口增长快,3、人口问题,二、基本国策实行计划生育,1、基本内容:控制人口数量,提高人口素质。,2、具体要求:晚婚、晚育、少生、优生,三、人口分布,1、人口密度,2、人口分布的特点:东多西少,有的人总认为生多少个孩子是自己的权力,其他人管不着。为什么国家要推行计划生育?请你用这节课学到的知识解释一下。,说一说:,

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