发现问题并提出猜想是科学探究的前提.“猜想与假设”是在提出问题的基础上,利用已有的物理知识对所提问题进行推测与假设,平时多以填空题的形式出现.提出合理的猜想与假设,有助于探究者确定探究的内容和方向,避免探究的盲目性.常见的猜想题有两类:一类是对某种现象提出猜想,另一类是对某一实验结论进行猜想. The discovery and the conjecture are the prerequisites of scientific inquiry. “Conjecture and Assumption” is based on the question raised, using the existing knowledge of physics to make presumptions and assumptions about the questions raised, usually in the form of blank questions. Put forward reasonable conjecture and hypothesis, help the researcher to determine the content and direction of inquiry, and avoid the blindness of inquiry.There are two kinds of common conjecture questions: one is to conjecture a phenomenon and the other is to a Experimental conclusion to guess.