一、基本概念透视 本部分内容包括“长度的测量”、“简单的运动”、“质量和密度”、“力”、“力和运动”、“压强”、“浮力”、“简单机械”、“机械功与机械能”等章节.要求理解的知识点有20个,要求会的知识点有11个,要求知道的知识点有33个,这是历年来中考的重要内容.在2004年各省市的中考题中,力学这部分内容的分值比例占到36％~40％. First, the basic concept of perspective This section includes “length measurement ”, “simple motion ”, “quality and density ”, “force ”, “force and movement ”, “pressure ”,“”buoyancy “, ”simple machinery “, ”mechanical work and mechanical energy " and other chapters. There are 20 knowledge points to be understood, 11 knowledge points are required, and knowledge points are required to be known. There are 33, this is an important content of the annual examination in the past years. In 2004 the provinces and cities in the examination questions, the proportion of the mechanical part of the score accounted for 36% to 40%.