太阳对地球的影响课件-高一上学期地理人教版必修1

1、回顾1.天体2.天体系统3.太阳系的八大行星4.普遍性5.特殊性太阳对地球的影响第一章 行星地球0102为地球提供能量太阳活动的影响01PART ONE为地球提供能量巨大炽热的气体球主要成分是氢和氦表面温度6000kt=T-T0(273.15K)能量来源核聚变关于太阳太阳源源不断地以电磁波的形式向四周放射能量这种现象称为太阳辐射太阳辐射光、热资源生物的生长发育为地球提供能量水、大气运动、生命活动的主要动力为地球提供能量维持着地表温度煤炭、石油为地球提供能量能量来源能量来源直接影响间接影响万物生长靠太阳为物质循环提供动力提供太阳能提供矿物燃料 太阳辐射对地球的影响提供光热资源太阳辐射的重要影响：

2、1、太阳直接为地球提供了光、热资源地球上的生物的生长发育离不开太阳2、太阳辐射维持着地表温度是地球上的水、大气运动和生命活动的主要动力3、为我们地球提供了能源资源，如太阳能、煤炭、石油活动探究（1）到达大气上界辐射的分布有什么规律？（2）热带雨林和亚寒带针叶林生物量有什么差异？（3）前两个问题的结论有没有相关性？（4）描述这两个地区的自然景观差异。影响太阳辐射总量高低的因素1、纬度：一般情况下，纬度高低与太阳辐射量成反比。影响太阳辐射总量高低的因素2、地势：海拔越高，空气越稀薄，到达地面的太阳辐射量越大。影响太阳辐射总量高低的因素3、天气状况：云层厚度与太阳辐射成反比。天气气候干旱，晴天多，获

3、得的太阳辐射总量大地势海拔越高，空气越稀薄，到达地面的太阳辐射量越大纬度纬度越低，太阳高度角越大，获得的太阳辐射量多影响太阳辐射总量高低的因素中国年太阳辐射总量分布分布特点：高值中心低值中心02PART TWO太阳活动影响地球太阳大气层的结构日冕色球光球光球层用肉眼可以观测到的太阳表面500km 平时所见太阳光基本都由光球发射出来色球层玫瑰色，在日全食时或用特殊望远镜几千千米它发出的可见光不及光球的千分之一日冕层可延伸到几个太阳半径亮度仅为光球的百万分之一太阳大气层的结构太阳大气层的结构太阳活动1、太阳黑子：发生在光球表面温度较低的地方的“黑斑点”太阳大气经常发生大规模的运动太阳活动的类型2、

4、太阳耀斑：发生在色球层表面能量爆发形成的“亮斑”太阳黑子耀斑（色球爆发）太阳风太阳活动Add your words here，according to your need to draw the text box size。ADD TITLEAdd your words here，according to your need to draw the text box size。ADD TITLE太阳活动活动通常，黑子活动增强的年份也是耀斑频繁爆发的年份。黑子区域之外的区域也是耀斑出现频率最多的区域 太阳活动对地球的影响1、干扰地球无线电短波通讯 太阳活动对地球的影响2、产生磁暴现象3、产生极光

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