中考试题经常出现图象题,考查了同学们观察物理图象和分析物理图象的能力。用图象法来描述物理过程具有形象直观的特点,并可以清晰地描述出其变化的动态特征,把物理量之间的相互依赖关系和线性关系、周期性等清晰地呈现出来。如何通过图象将其中的物理信息挖掘出来呢?1.由“点”看定量这需要学生找准某一点对应的横坐标、纵坐标,难度很小。举个例子,如下图表示的是晶体 The exam questions often appear on the image test, examining the students ability to observe the physical image and analyze the physical image. The image method is used to describe the visual characteristics of the physical process and to clearly describe the dynamic characteristics of the changes. The interdependencies, linear relations and periodicity of the physical quantities are clearly presented. How to dig out one of the physical information through the image? 1. Look at the quantitative “” point This requires students to find a point corresponding to the horizontal and vertical coordinates, the difficulty is very small. For example, the following figure shows the crystal