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密度测量是初中阶段必做的一个重要实验,其中误差分析是实验的重要一环,是重点和难点.误差分析能较好地体现同学们对问题的理解能力,既有助于培养同学们细心分析问题的良好习惯,又有助于培养同学们的逻辑推理能力.在初中物理学习中,课程标准要求“会”用天平和量筒测量固体和液体的密度,即要求同学们掌握测量固体和液体密度的方法,并能根据实验方法及过程,分析误差产生的原因.
Density measurement is an important experiment to be done in junior middle school, in which the error analysis is an important part of the experiment, which is the key and difficult point.Error analysis can better reflect the students’ understanding of the problem, which not only helps to train the students carefully Analysis of the problem of good habits, but also help to develop the students logical reasoning ability in junior high school physics learning, curriculum standards “will ” with a balance and graduated cylinder to measure the density of solid and liquid, which requires students to master the measurement of solid And liquid density method, and according to experimental methods and processes, analyze the causes of error.