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第七单元能源和能源的利用一、重点内容分析: 本章教材内容共分4部分:能源概述、常规能源、新能源和能源问题。第一节能源概述,介绍了能源的概念、分类、能量转换和能源的重要性。能源的概念是学生学习全章知识的基础。能源的分类和能源的重要性是重点内容。能源资源的种类很多,分类的方法也不少,要着重掌握下列分类方法:①按其形成和来源分为3大类,第1类是来自太阳辐射的能量,如煤、石油、天然气、生物能等能源;第2类是来自地球内部的能量,如地热、核能;第3类是潮汐能。②按使用状况划分为常规能源和新能源,其中煤、石油、天然气、水能以及生物能等是多年来大
Unit 7: Use of Energy and Energy I. Analysis of key contents: The contents of this chapter’s teaching materials are divided into four parts: energy overview, conventional energy, new energy and energy issues. The first section of the energy profile introduced the concept of energy, classification, energy conversion and the importance of energy. The concept of energy is the basis for students to learn the entire chapter of knowledge. The classification of energy and the importance of energy are the key elements. There are many types of energy resources and there are many methods for classification. We must focus on the following classification methods: 1 According to their formation and sources, they are divided into 3 categories. Category 1 is energy from solar radiation, such as coal, oil, natural gas, and biological resources. Can energy, etc.; The second category is from the Earth’s internal energy, such as geothermal, nuclear energy; The third category is tidal energy. 2 Divided into conventional energy and new energy according to the conditions of use, of which coal, oil, natural gas, water energy, and biological energy are