2022年北师大版八年级下册6.2《探究凸透镜成像规律》WORD教案1 .pdf

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1、名师精编优秀教案南方中学八年级物理自学参考提纲课型：新授执笔：陈剑峰合作：组长：（10 年 3 月 1日）【学习内容】：（第六章第 2 节）探究-凸透镜成像规律（1 课时）【学习目标】：理解凸透镜的成像规律，知道凸透镜所成像的虚实、倒正、大小与发光体位置的关系。【学习过程】：学习任务一：探究凸透镜成像问题与猜想透过凸透镜观察纸上的黑字，移动凸透镜的位置，你会有什么发现？（焦距 f；物体离凸透镜的距离为物距，用u 表示；像到凸透镜的距离为像距，用v 表示）制订计划你认为需要哪些器材探究凸透镜成像？你认为除了观察像的、特点外，还需测哪些物理量？（提示：凸透镜焦距已知，不必测量，标签上已注明）你认为

2、该实验应分几种情况来研究，请设计一个表格，记录现象和数据（提示：可参考课本6、7 两页）“一滴水中见世界”，露珠很小却很可爱，它受到人们的赞扬，诗句中对露珠的赞美不亚于江河，为什么呢？露珠充其量只是一滴名师精编优秀教案收集证据根据计划进行实验探究，并把现象和数据填在表格中结论完成课本第7 页“结论”中的问题巩固练习题：课本第7 页 1、2、3 题学习任务（二）：总结凸透镜规律【基础训练】1、实像是能用光屏到的像，它是由而成的。虚像是发散光线的反向延长线的交点，人眼（能、不能）看见，但不能在光屏上呈现。2、通过实验探究我们知道：焦点是凸透镜成和的分界点；两倍焦距处是凸透镜成和的分界点。3、观察凸

3、透镜所成的像”的实验中：（所用的凸透镜上标有f15cm 字样）若将物体放在距离凸透镜20cm 处时，会成像；第二节探究 凸透镜成像规律第 1 页 共 2 页文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8

4、B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 H

5、M10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10

6、S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3

7、 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5

8、Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6

9、文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6名师精编优秀

10、教案若将物体放在距离凸透镜35cm 处时，会成像；若将物体放在距离凸透镜10cm 处时，会成像。4、凸透镜前25cm 处的物体沿主轴靠近透镜时，其所成的倒立、放大的实像将（）A由实变虚B由虚变实C由大变小D不发生变化3、凸透镜所成实像一定是（）A.像比物大B.像比物小C.像与物位于凸透镜两侧D.像总是正立的4、放大镜不能成的像是()A.放大的实像B.缩小的实像C.放大的虚像D.缩小的虚像【能力提升】5、有一凸透镜，当物体放在离透镜12cm 处时，成放大的实像，当物体放在离透镜7cm 处时，成放大的虚像，则这个凸透镜的焦距不可能等于（）A.8cm B.10cm C.11cm D.14cm 6、粗

11、细均匀的物体AB 横放在焦点之外的凸透镜L 的主轴上（如图），关于 AB 通过 L 所成的像，下列说法正确的是（）A.像在主轴上，且A 端在左边，B 端在右边B.像在主轴上，且B 端在左边，A 端在右边C.像的 A 端粗、B 端细D.像的 A、B 端粗细相同7、小明用蜡烛、凸透镜和光屏做“探究凸透镜成像的规律”的实验。如图18 所示：(1)要使像能够成在光屏的中央，应将光屏向调整(选填“上”或“下”)；(2)实验过程中，当烛焰距凸透镜15cm 时，移动光屏至某一位置，在光屏上得到一等大清晰的像，则该凸透镜的焦距是cm；(3)接着使烛焰向左移动5cm，此时应该将光屏向移到某一文档编码:CF4K6

12、Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1

13、 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T

14、10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6

15、O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7

16、D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3

17、L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码

18、:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6名师精编优秀教案位置(选填“左”或“右”)，才能在屏上得到倒立、清晰的实像8、一个物体通过凸透镜在另一侧光屏上成像，若将透镜半部分用纸遮住，物体的像将（）.在屏上只被接到物体上半部分的像.

19、能得到物体不清晰的完整的像.能得到物体完整的像，但亮度却减弱了.能得到物体大部分的实像9、烛焰通过透镜在恰好在光屏上成清晰缩小的像，只把烛焰和光屏互换位置，则（）.屏上成一个缩小的像.屏上成一个放大的像.屏上无像，只能透过透镜才能看到.屏上无像，但调节光屏位置，就能成像。10、在“研究透镜成像规律”的实验中：请你设计一个测量透镜焦距的简易方案，写出实验步骤，并评估你的实验方案的优缺点。第一节透镜第 2 页 共 2 页第二节探究 凸透镜成像规律第 2 页 共 2 页文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10

20、S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3

21、 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5

22、Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6

23、文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:C

24、F4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8

25、B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6文档编码:CF4K6Q8B8O1 HM10T10S7I6O3 ZT7D5Y2P3L6