二年级科学下册磁铁4《磁极与方向》教学课件教科版.ppt

上传人:figureissue185 文档编号:1207619 上传时间:2019-05-25 格式:PPT 页数:12 大小:4.42MB
下载 相关 举报
二年级科学下册磁铁4《磁极与方向》教学课件教科版.ppt_第1页
第1页 / 共12页
二年级科学下册磁铁4《磁极与方向》教学课件教科版.ppt_第2页
第2页 / 共12页
二年级科学下册磁铁4《磁极与方向》教学课件教科版.ppt_第3页
第3页 / 共12页
二年级科学下册磁铁4《磁极与方向》教学课件教科版.ppt_第4页
第4页 / 共12页
二年级科学下册磁铁4《磁极与方向》教学课件教科版.ppt_第5页
第5页 / 共12页
点击查看更多>>
资源描述

磁极与方向,同学们,你们知道教室的东南西北分别在哪里吗?一起来指一指。,你们知道吗?磁铁的磁极和方向是有关系的。,实验要求,方向纸根据实际方向放好,把支架放在方向纸的中间。 轻轻转动磁铁,认真观察静止后磁极1、2分别指向哪个方向,并记录。每个小组至少要完成3次实验。 不要晃动桌面。,条形磁铁能否指示方向,打开白纸,仔细观察,你有什么发现?,把环形磁铁悬挂起来,实验要求,方向纸根据实际方向放好。 把架子放在方向纸的中间。 轻轻扭动磁铁,认真观察磁铁静止后磁极分别指向哪个方向,做好记录。 不要晃动桌面。 至少要完成3次实验。,其他形状磁铁能否指示方向,思考,条形磁铁、环形磁铁、蹄形磁铁,它们的磁极和方向分别有什么关系?,指向南方,指向北方,指向南方的磁极叫南极(South) 指向北方的磁极叫北极(North),S,N,S,N,指南针的构造,磁针,刻度盘,指南针的使用方法,图一,图二,课外活动,到操场上去,用指南针找一找。 国旗在哪个方向? 校门在哪个方向?,

展开阅读全文
相关资源
猜你喜欢
  • DIN EN 300132-3-0-2013 Environmental Engineering (EE) - Power supply interface at the input to telecommunications and datacom (ICT) equipment - Part 3 Operated by rectified current.pdf DIN EN 300132-3-0-2013 Environmental Engineering (EE) - Power supply interface at the input to telecommunications and datacom (ICT) equipment - Part 3 Operated by rectified current.pdf
  • DIN EN 300132-3-1-2013 Environmental Engineering (EE) - Power supply interface at the input to telecommunications and datacom (ICT) equipment - Part 3 Operated by rectified current.pdf DIN EN 300132-3-1-2013 Environmental Engineering (EE) - Power supply interface at the input to telecommunications and datacom (ICT) equipment - Part 3 Operated by rectified current.pdf
  • DIN EN 300132-3-2005 Environmental Engineering (EE) - Power supply interface at the input to telecommunications equipment - Part 3 Operated by rectified current source alternating .pdf DIN EN 300132-3-2005 Environmental Engineering (EE) - Power supply interface at the input to telecommunications equipment - Part 3 Operated by rectified current source alternating .pdf
  • DIN EN 300135-1-2008 Electromagnetic compatibility and Radio spectrum Matters (ERM) - Land Mobile Service - Citizens- Band (CB) radio equipment - Angle-modulated Citizens- Band rad.pdf DIN EN 300135-1-2008 Electromagnetic compatibility and Radio spectrum Matters (ERM) - Land Mobile Service - Citizens- Band (CB) radio equipment - Angle-modulated Citizens- Band rad.pdf
  • DIN EN 300135-2-2008 Electromagnetic compatibility and Radio spectrum Matters (ERM) - Land Mobile Service - Citizens- Band (CB) radio equipment - Angle-modulated Citizens- Band rad.pdf DIN EN 300135-2-2008 Electromagnetic compatibility and Radio spectrum Matters (ERM) - Land Mobile Service - Citizens- Band (CB) radio equipment - Angle-modulated Citizens- Band rad.pdf
  • DIN EN 300138-1-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service Digital Subscriber Signalling System No one (DSS1) protocol - Part 1.pdf DIN EN 300138-1-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service Digital Subscriber Signalling System No one (DSS1) protocol - Part 1.pdf
  • DIN EN 300138-2-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part.pdf DIN EN 300138-2-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part.pdf
  • DIN EN 300138-3-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part.pdf DIN EN 300138-3-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part.pdf
  • DIN EN 300138-4-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service Digital Subscriber Signalling System No one (DSS1) protocol - Part 4.pdf DIN EN 300138-4-2000 Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service Digital Subscriber Signalling System No one (DSS1) protocol - Part 4.pdf
  • 相关搜索

    当前位置:首页 > 教学课件 > 中学教育

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1