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物理学中对于多因素(多变量)的问题,常常采用控制因素(变量)的方法,把多因素的问题变成多个单因素的问题,而只改变其中的某一个因素,从而研究这个因素对事物影响,最后再综合解决,这种方法叫控制变量法。它是科学探究中的重要思想方法,广泛地运用在各种科学探索和科学实验研究之中。在试题中,控制变量的思想在实验方案设计、实验过程、实验交流表达和实验评价等过程都有体现,特别是在表格、数据、曲线、现象、装置等新情境中有着创造性的应用。
In physics, for multi-factor (multivariate) problems, control factors (variables) are often used to change multi-factor problems into multiple single-factor problems, and only one of them is changed to study this factor. Impact on things, and finally a comprehensive solution, this method is called the control variable method. It is an important method of thought in scientific inquiry and is widely used in various scientific explorations and scientific experimental studies. In the test questions, the idea of control variables is reflected in the experimental design, experimental process, experimental communication expression and experimental evaluation, especially in the new situation of forms, data, curves, phenomena, devices and other creative applications.