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根据“调整初中物理教学要求的意见”,“压强”这一章,要求学生掌握压力、压强的概念,并能进行有关计算,了解增大或减少压强的方法;要求学生知道帕斯卡定律;了解液压机的工作原理并能进行压力的简单计算;还要求学生在掌握一般压强的基础上了解液体压强的特殊性,掌握反映液体内部压强规律的公式和有关计算;了解连通器的原理和应用;同时还要求学生初步掌握有关大气压强的基础知识.“浮力”这章是前几章知识的综合运用,与“压强”的关系十分密切.要求学生在理解液体内部压强、压力等知识的基础上了解产生浮力的原因;阿基米德定律是本章的核心,要使学生牢固掌握;理解和运用二力平衡的有关知识使学生掌握物体的沉
According to the “Adjusting Opinions on Junior Physics Teaching Requirements”, the chapter “Pressure” requires students to master the concepts of pressure and pressure, and can perform calculations to understand how to increase or decrease pressure; require students to know Pascal’s law; understand hydraulic presses. The principle of work can also be used to perform simple pressure calculations. It also requires students to understand the specificity of liquid pressure on the basis of general pressure, master the formulas and related calculations that reflect the internal pressure of the liquid, and understand the principle and application of the connected devices. Students are required to have a basic knowledge of atmospheric pressure. The chapter “buoyancy” is a comprehensive application of the previous chapters and has a close relationship with “pressure”. Students are required to understand and understand the knowledge of internal pressure and pressure in liquids. The cause of buoyancy; Archimedes’s law is the core of this chapter, to enable students to firmly grasp; understand and use the relevant knowledge of the two forces to enable students to master the sinking of objects