论文部分内容阅读
“质量与密度”属于力学的基础部分,本部分的核心概念是密度这个物理量,围绕密度讲述了质量和密度这两个物理量的概念和单位,重点体会密度概念的定义方法,本部分要求同学们会正确使用测量质量的工具——天平;在对密度概念理解的基础上,会正确使用天平和量筒测密度,掌握测常见的固体和液体密度的一般方法,知道实验中减小误差的方法;会灵活应用密度的相关知识解决一些生活中的实际问题,体会物理和生活的紧密联系.中招考试中本部分既可
“Quality and density ” belongs to the basic part of mechanics. The core concept of this part is the physical quantity of density. The concept and unit about the two physical quantities of mass and density are described around density, and the definition of density concept is emphasized. The requirements of this part On the basis of comprehension of the concept of density, the students will correctly use the balance and graduated cylinder density measurement to master the common methods for measuring the common solid and liquid densities. It is known that the experiment reduces the error Method; will be flexible application of the relevant knowledge of density to solve some of the practical problems in life, understand the physical and life of the close contact.