问答题在初中物理书中占有较大的比例.正确解答物理问答题不仅能够加深对物理知识的理解和掌握,而且是发展智力,培养解决实际问题能力的重要途径.初中学生对物理学习有着极大的兴趣,但对应用所学知识解答物理问答题却深感头痛,大多是觉得心里明白,就是不知如何才能叙述准确.究其原因:一是语言表达能力较差;二是对物理概念理解不透,一知半解;三是学而不知所用.为此,许多学生在解答问答题时经常出错,久而久之,挫伤了学习的积极性.为了帮助学生克服这一难题,现将中学生在解答物理问答题时容易出现的错误归纳如下,供广大师生参考.一、答非所问——所答的内容脱离了题目问及的内容例1 为什么火车即使紧急制动后也要向前运动一段距离才能停下来?答因为火车受到摩擦阻力的作用,所以会慢慢地停下来.分析不难看出,虽然上述答案中所叙述的因果关系没错,但题目要求解答的是火车继续前进的原因,而答题者却擅自更改了题意,解释了火车停下来的原因,显然答案与题意不 Question and answer questions occupy a large proportion of junior high school physics books.A correct answer to the physical question and answer questions can not only deepen the understanding and mastery of the physical knowledge, but also an important way to develop intelligence and cultivate the ability to solve practical problems. Great interest, but the application of knowledge to answer the physical question and answer are deeply headache, most of them feel that my heart understand that I do not know how to accurately describe the reason: First, poor language skills; the second is to understand the concept of physics Imperceptible, ill-informed; third, but I do not know what to use .Therefore, many students often fail to answer the question and answer, over time, dampened the enthusiasm for learning.In order to help students overcome this problem, now middle school students in the answer to the physical question and answer First of all, the answer is non-question - the contents of the answer from the question asked Example 1 Why even after the emergency brake train must move forward some distance to stop? Because the train is subject to frictional drag, it stops slowly, and it is easy to see that although the train described above If the relationship is true, but answers to questions asked are the reason the train to move forward, while respondents was allowed to change the meaning of the questions, explain why the train came to a stop, and the answer is clearly not intended to question