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密度的测量是初中物理实验的基础,同时也是力学实验综合考查的基本来源.对于固体和液体密度的测量需要从密度测量的原理(ρ=mV)去考虑:测量出固体和液体的质量、固体和液体的体积,这是物质密度的常规测量法.我们要在常规测量法的基础上培养学生多种解题的能力,这样可以拓展和延伸知识,还可以增强学生综合解题的能力,培养学生创新的能力.下面举两例供大家参考:
Density measurement is the basis of the junior high school physics experiment as well as the basic source of the comprehensive test of the mechanics experiment.For the measurement of solid and liquid density, we need to consider from the principle of density measurement (ρ = mV): measure the solid and liquid quality, solid And the volume of liquid, which is the conventional measurement of the material density. We should build on the basis of conventional measurement of the ability of students to solve a variety of problems, so you can expand and extend knowledge, but also can enhance students’ ability to solve problems, training Students ability to innovate. Here are two cases for your reference: