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在教学过程中,笔者发现学生对教材“太阳辐射和地面辐射、大气逆辐射关系示意图”(湘教版地理“必修Ⅰ”第二章第三节“大气环境”P_(45),参考图1)存在一些疑问。问题主要集中在:太阳辐射是100个单位,为什么地面辐射有120个单位,大气逆辐射有106个单位?一、相关理论知识背景被人们普遍认同的能量守恒和转化定律告诉我们:自然界中存在着各种形式的能量,它们既不能凭空产生,也不会凭空消失,只能从一种形式转化为另一种形式,或者从一个物体转移到另一个物体上。并且在转化或转移的过程中,一种形式的能量增加,意味着另一种形式的能量减少,而能量的总量保持不变。我们地球表
In the process of teaching, I found that the students of textbooks “solar radiation and ground radiation, atmospheric inverse radiation diagram” (Xiang version of Geography “compulsory I ” Chapter II third 45), see Figure 1) There are some questions. The problems are mainly concentrated in: the solar radiation is 100 units, why the ground radiation has 120 units, the atmospheric inverse radiation has 106 units? First, the relevant theoretical knowledge background is generally recognized by the conservation of energy and transformation law tells us: there is nature With all forms of energy, they can neither emerge out of thin air nor disappear out of thin air, and can only be converted from one form to another or from one object to another. And in the process of conversion or transfer, one form of energy increase means that another form of energy reduction, while the total amount of energy remains unchanged. Our Earth Table