最新八年级下册物理知识点梳理优秀名师资料.doc
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1、八年级下册物理知识点梳理Construction scheme of Chapter 1.1 the integrated presentation as a programmatic document for guiding construction of the construction organization design to meet the request of tender documents to principles highlight the scientific nature, seriousness and feasibility, regulatory and gu
2、idance. According to about content and the company related engineering construction experience, on project management organization institutions set, labor plans arrangements, material supply arrangements, mechanical equipment configuration, main points part items engineering construction, duration g
3、uarantee measures, and quality, and security guarantee measures, guarantee safety, civilization construction, reduced nuisance, reduced pollution and noise of measures, do has detailed of deployment, to ensure the engineering quality, and high-speed, and security civilization, and environmental cons
4、truction. 1.1.1 the establishment basis 1 tender document; 2 Summary of construction drawing and drawing, technical approval; 3 geological survey report, local weather conditions; 4 to the supply of materials; 5 construction-related laws, regulations and local regulations, compulsory provision of en
5、gineering construction, existing national, industry, regional Atlas of norms, procedures and standards; 7 company of the quality manual, environmental/occupational safety and Health Handbook and procedures document; 8 technology, funding, equipment and construction managers, labor and technical forc
6、e rich construction and related engineering experience with good service and commitment to the company. 1.1.2.1 1.1.2 preparation of principles committed to all meet all the requirements and tender documents all commitments service-oriented, focus on customer satisfaction as the main evaluation, qua
7、lity first, fully embodies the design style. 1.1.2.2 earnestly familiarity with drawing paper and understand the design philosophy, manifests the design intent, play to the companys overall advantage to achieve high quality, high speed, safety, and environmental protection construction, advanced tec
8、hnology, reducing the cost of. 1.1.2.3 around the quality objectives of the project, carried out in the quality control test evaluation of separation, strengthen inspection, perfect means, process control, the 16-character guideline to ensure that eligibility criteria, on the basis of striving for e
9、xcellence. 1.1.2.4 ensuring construction safety accident-free, environmentally friendly production and civilized construction, to achieve municipal model safe and civilized construction site. 1.1.2.5 promotion, application construction of 10 new technologies and new materials, new techniques, new eq
10、uipment and improve the level of project and construction management of modern scientific and technological content, declare a provincial construction technologies application and demonstration project. 1.1.3 preparation of八年级下册物理知识点梳理 第七章 力 第1节 力 1、什么是力?力是 ,力不能离开 存在,其中给出力的物体叫 物体,另一个接受力的物体叫 物体; 2、力的
11、单位:物理学中,力用符号 表示,力的单位是 ,简称 ,符号是 3、力的作用效果有两种:一是力可以使物体的 发生改变; 二是力可以使物体的 发的改变和 改变、 生改变。运动状态的改变包括物体运动快慢4、力的三要素:力的 、 、 叫力的三要素。影响力的作用效果的是力的 、 、 5、力的示意图:在受力物体上沿着力的方向画一条线段,在线段的末端画一个箭头,表示物体所受力的 和 。这种方法叫做力的示意图。(会画力的示意图) 6、物体间力的作用是 的。穿溜冰鞋的人用力推墙,人会向 退,这是因为力的作用是 第2节 弹力 1、物体由于 而产生的力叫做弹力。物体受力时会发生形变,不受力时形变能自动恢复到原来的形
12、状的特性叫做 ;不受力时不能自动恢复到原来形状的特性叫做 。拉力、压力、支持力都是弹力,对吗,答 。 2、测力计是测量 的大小的工具 。实验室里测量力的工具是 ,它是根据在弹性限度内,弹簧受到的 越大,弹簧的 就越长的道理做成的。测量力的工具还有握力计,臂力计等。而各种各样的秤是测 质量 的。 3、使用弹簧测力计时,首先要观察它的 和 ,不许超过它的 。还要观察弹簧的指针是否指到零刻线,若没有,则 要调 或读数时要进行 加减修正。弹簧在测量范围内有:伸长与受到的拉力成 比,弹簧的伸长=长度-原长。如原长2厘米,受3N时弹簧长5厘米,受6N的拉力时弹簧长 厘米。 4、注意:、测力时 力的方向要与
13、弹簧测力计的轴线方向一致 第3节 重力 1、重力:物体由于 而受到的力叫做重力,用字母 表示。重力的施力物体是 ,方向是 。地面 附近的一切物体都受到了 力的作用。 2、物体重力的大小跟它的 成正比,表达式为 ,重力与质量的比值为 ,它的意义是 。粗略计算时,g取 N/Kg、重力的大小要随位置而 ,而质量随位置 变。物体在月球上受到的重力是地球上重力的 。地面上60千克的物体受到的重力为 牛顿,拿到月球上去重力为 N。地面上800克的物体受到的重力为 牛顿,用量程为5N的弹簧秤能称出它的重力吗?答 。 3、重锤线是利用重力的 制成的,用它来检查所砌的墙壁是否 。 4、重心是重力在物体上的 。均
14、匀外形规则的物体的重心在这个物体的几何中心上。 会画物体受到的重力的示意图: 5、宇宙间的任何两个物体间都存在 的力这就是万有引力。 第八章 运动和力 Construction scheme of Chapter 1.1 the integrated presentation as a programmatic document for guiding construction of the construction organization design to meet the request of tender documents to principles highlight the s
15、cientific nature, seriousness and feasibility, regulatory and guidance. According to about content and the company related engineering construction experience, on project management organization institutions set, labor plans arrangements, material supply arrangements, mechanical equipment configurat
16、ion, main points part items engineering construction, duration guarantee measures, and quality, and security guarantee measures, guarantee safety, civilization construction, reduced nuisance, reduced pollution and noise of measures, do has detailed of deployment, to ensure the engineering quality, a
17、nd high-speed, and security civilization, and environmental construction. 1.1.1 the establishment basis 1 tender document; 2 Summary of construction drawing and drawing, technical approval; 3 geological survey report, local weather conditions; 4 to the supply of materials; 5 construction-related law
18、s, regulations and local regulations, compulsory provision of engineering construction, existing national, industry, regional Atlas of norms, procedures and standards; 7 company of the quality manual, environmental/occupational safety and Health Handbook and procedures document; 8 technology, fundin
19、g, equipment and construction managers, labor and technical force rich construction and related engineering experience with good service and commitment to the company. 1.1.2.1 1.1.2 preparation of principles committed to all meet all the requirements and tender documents all commitments service-orie
20、nted, focus on customer satisfaction as the main evaluation, quality first, fully embodies the design style. 1.1.2.2 earnestly familiarity with drawing paper and understand the design philosophy, manifests the design intent, play to the companys overall advantage to achieve high quality, high speed,
21、 safety, and environmental protection construction, advanced technology, reducing the cost of. 1.1.2.3 around the quality objectives of the project, carried out in the quality control test evaluation of separation, strengthen inspection, perfect means, process control, the 16-character guideline to
22、ensure that eligibility criteria, on the basis of striving for excellence. 1.1.2.4 ensuring construction safety accident-free, environmentally friendly production and civilized construction, to achieve municipal model safe and civilized construction site. 1.1.2.5 promotion, application construction
23、of 10 new technologies and new materials, new techniques, new equipment and improve the level of project and construction management of modern scientific and technological content, declare a provincial construction technologies application and demonstration project. 1.1.3 preparation ofConstruction
24、scheme of Chapter 1.1 the integrated presentation as a programmatic document for guiding construction of the construction organization design to meet the request of tender documents to principles highlight the scientific nature, seriousness and feasibility, regulatory and guidance. According to abou
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