论文部分内容阅读
“浮力”一章是在学过力、二力平衡、密度和液体内部压强的基础上,研究浮力问题,认识浮力的作用、分析浮力产生的原因、探索浮力的规律及其应用。在教学过程中,我们着重从如下两方面下功夫。一、用实验手段帮助学生建立浮力概念,探索浮力的规律。引导学生仔细观察图1实验,通过图2的分析,建立浮力的概念:液体对物体向上和向下的压力差就是液体对物体的浮力。
The chapter “buoyancy” is based on the study of force, balance of two forces, density and internal pressure of liquids. It studies buoyancy problems, recognizes the role of buoyancy, analyzes the causes of buoyancy, and explores the laws and applications of buoyancy. In the teaching process, we focus on the following two aspects. First, use the experimental means to help students establish the concept of buoyancy and explore the laws of buoyancy. Guide the students to carefully observe the experiment of Figure 1, and through the analysis of Figure 2, establish the concept of buoyancy: The pressure difference between the liquid up and down the object is the buoyancy of the liquid against the object.