江西省吉安县第三中学高中地理第二章自然地理环境中的物质运动和能量交换2.1冷热不均引起大气运动——热力环流导学案(无答案)中图版必修1.doc

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1冷热不均引起大气运动热力环流【学习目标】-导1、热力环流的形成2、常见的热力环流现象【导学流程】1、基础梳理思【背景知识】1、近地面与高空的概念:近地面:是大气边界最接近地表面的部分高空:一般指海拔 1500 米以上的大气部分2、 气压:(1)概念:单位面积上的大气压力。(2)特点:气压随着海拔高度的增加而递减3、高压、低压:(1)同一水平面上,气压值大,为高压;气压值小,为低压(2)特点:高压与低压的比较是指同一水平面而言4、等压线(面):大气中气压值相等的点所构成的线(面)理想状态下:气压随海拔高度的增加而降低;同一海拔高度处,气压相等,即等压面与海平面平行,大气处于稳定状态。 1、热力环流概念2、热力环流形成原因3、热力环流运动方式2、合作探究-议、展、评1、读热力环流示意图,简述大气热力环流的形成过程22、分析山谷风,海陆风和城市风的形成过程3、比较 A、B、C 、D 点四点的气压值三、自我检测-检1、若 abcde 为不同温度值,则气压值的大小比较正确的是A、甲乙丙丁 B、乙甲丁丙 C、甲乙丁丙 D、乙甲丙丁2、若 abcde 为不同气压值,则甲乙丙丁四地的气流运动方向是A、甲一乙一丁一丙一甲 B、丁一丙一甲一乙一丁 C、乙一甲丙一丁乙 D、乙一甲一丙一丁一乙3

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