密度概念是初中力学的基本概念之一,因此密度是中考物理的重要考点·新的课程标准对该考点的要求是:通过实验理解密度的概念,尝试用密度知识解决简单问题,能解释生活中的一些与密度有关的物理现象·正是在这个新标准的催生下,各地的密度考点出现了很多新题型·下面举例说明·一 The concept of density is one of the basic concepts of junior middle school mechanics. Therefore, density is an important test point for physics in middle school. The requirements of the new curriculum standards for this test center are: to understand the concept of density through experiments, to try to solve simple problems with density knowledge, and to explain life. Some of the density-related physics phenomenon is precisely because of the birth of this new standard, there have been a lot of new questions in the density test sites around.