密度是初中物理的重要概念之一,也是中考命题的热点。密度的测量是初中物理的重要实验,测量密度的方法多种多样,常用的方法有常规测量法、等效替代法、浮沉法等。在掌握密度测量的基本实验技能上,注重知识的总结、拓展和应用,用所给的器材完成密度测量实验,这样有助于培养学生发 Density is one of the important concepts of junior high school physics, but also a hot topic in the test. Density measurement is an important experiment in junior high school physics. There are many methods for measuring density. Common methods include conventional measurement method, equivalent substitution method and floatation method. In mastering the basic experimental skills of density measurement, pay attention to the knowledge of the summary, development and application, with the equipment to complete the density measurement experiment, it will help students hair