近几年,实验探究题逐渐成为中考物理题型的一个重要构成部分。分析各省市中考试题发现,试题测重了对学生科学探究方法的考查,尤其是控制变量法。“控制变量法”是指在研究问题时,某一物理量往往受几个不同物理量的影响。为了研究各个不同物理量之间的关系,就需要控制其中的某些物理 In recent years, experimental inquiry has gradually become an important part of the physical exam type. Analysis of provinces and cities in the examination questions found that the questions measured the student's scientific inquiry method of examination, especially the control variable method. “Control Variable Method ” refers to the study of the problem, a physical quantity is often affected by several different physical quantities. In order to study the relationship between different physical quantities, some of them need to be controlled