初二下学期期末复习指导

• 作 者: 王周述
• 出 处: 中学生理科月刊
• 发表日期: 1997年11期
• 关键词: 阿基米德原理 主要器材 滑动摩擦力 受力面积 力和运动 十二章 表面状况 知识系统 处理方法 知识单元

本学期学习了三个较大的物理知识单元：《力和运动》（第九章）、《压强和浮力》（第十至十二章）、《简单机械和功》（第十三、十四章）．各单元的知识系统和要点如下：本学期还学了三个学生实验：研究液体内部压强眼深度的关系；研究杠杆的平衡条件和测滑轮组的机械效率；以

This semester has learned three larger physical knowledge units: “Rights and Movements” (Chapter 9), “Pressure and Buoyancy” (Chapter X to Twelve), and “Simple Mechanics and Work” (13th and 10th). Four chapters). The knowledge systems and main points of each unit are as follows: This semester also studied three student experiments: Studying the relationship of the internal pressure of the liquid to the depth of the eye; Studying the balance condition of the lever and measuring the mechanical efficiency of the pulley block;