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《熔化和凝固》是人教版八年级物理教材上册第二节的内容,依照义务教育教学大纲,本节的知识与技能目标是:1.能区别物质的气、液和固态三种形态,并能描述这三种物态的基本特征;2.了解物质的固态和液态之间可以相互转化;3.了解熔化、凝固的含义,了解晶体和非晶体的区别;4.了解熔化曲线和凝固曲线的物理含义。熔化和凝固是自然界普遍、常见的现象,但初中八年级的学生尚处
“Melting and solidification” is the second part of the eighth edition of Physical Education PEP textbook. According to the Compulsory Education Syllabus, the objectives of this section are as follows: 1. To distinguish the three forms of material gas, liquid and solid, And can describe the basic characteristics of these three states; 2. Understand the material can be transformed between solid and liquid; 3. Understand the meaning of melting, solidification, understanding of the difference between crystalline and non-crystalline; 4. Understand the melting curve and solidification The physical meaning of the curve. Melting and solidification are common and common phenomena in nature, but eighth graders in junior high schools are still living