1998年全国初中物理知识竞赛试题,在激发学生学习兴趣、启迪思维、增长知识、培养能力等方面有如下特点.1 联系生活,激发学习物理的浓厚兴趣1998年竞赛题目不少取自与日常生活有关的物理现象,使学生体味到物理就在我们身边的亲切感,从而产生对物理学习的浓厚兴趣.竞赛题中,仅光学现象在生活中的应用就有8道题.例如,选择题第4题,“医生在冬天检查牙齿时,常把小镜子放在酒精灯上适当烤一烤”的目的是“太凉?消毒?防止热膨胀?”还是“镜面不会产生水雾,可以看清牙齿?”(答案:镜面不会产生水雾,可以看清牙齿.)第11题“老奶奶用放大镜看报时,为了看到更大的清楚的像,她常常将”报、放大镜、眼睛如何移动?(答案:报与眼睛不动,放大镜离报远一些.)填主题的第5题,“体温计的横截面做成 The 1998 National Junior Physics Physics Knowledge Contest questions have the following characteristics in stimulating students’ interest in learning, enlightening their thinking, increasing their knowledge, and developing their abilities.1. Contact life and stimulate the keen interest in learning physics Many topics in 1998 contests were taken from daily life. The related physical phenomena make students appreciate the intimacy of physics around us, and thus have a keen interest in physics learning. In the contest title, only the application of optical phenomena in life has eight questions. For example, multiple choice questions Question 4: “When a doctor checks his teeth in the winter, he often puts a small mirror on an alcohol lamp for proper baking and baking.” The purpose is “too cool? Disinfect? ​​Prevent thermal expansion?” or “The mirror surface will not produce water mist. You can see it clearly. “Answer:” (Answer: The mirror will not produce water fog, you can see the teeth.) Question 11 “When the grandmother used a magnifying glass to see the newspaper, in order to see a bigger and clearer image, she often used newspapers, magnifying glasses, and how her eyes moved. (Answer: newspaper and eyes do not move, the magnifying glass is far from the newspaper.) Fill in topic 5, ”The cross-sectional thermometer is made