小学一年级电的知识ppt课件

.,电的产生,.,电是怎么产生的,是怎么产生的？,电,.,电的发现,传说在西元前六百年，希腊人特立茲已知将琥珀摩擦后，用來吸引树皮或纸张。,电的发现,西元1747年，美国科学家富兰克林为电下了新定义，他认为电不是摩擦产生的，任何物质皆含有”电流”。他认为物质带电太多，电荷得正，电不足，电荷为负，分量刚好，则电为中性，不正也不负。,西元1800年，意大利物理学家伏特发明电池，为人类带来可持续很久且又可靠的电力来源。,.,与电有关的知识,电可以做事：,点灯、加热、做机械运动,哪些东西用电：,电灯、电脑、电铃、电冰箱、洗衣机、微波炉、电磁炉、电视机、录音机、空调、电风扇,.,与电有关的知识,电流,从一个原子移动到另一个原子那就会产生电流,电压,是指电流的推力。电压越高，使电流通过电线的推力就越大。,.,与电有关的知识,.,讨论,火力,风力,水力,沼气,潮汐,核电,？,.,风力发电,风力发电的能量转换是怎样的呢?,电能,风能,YOURTITLE,动能,风能转化为动能（风机叶片受风力转动带动转轴，转轴带动齿轮箱:）2：动能转化为电能（齿轮箱带动发电机）,.,火力发电,火力发电的能量转换是怎样的呢?,火力发电厂的生产过程概括起来就是通过高温燃烧把燃料的化学能转变成热能，从而将火加热成具有一定压力温度的蒸汽，然后把热能转化为机械能，通过发电机的电磁感应将机械能转化为电能。,动能,电能,热能,.,.,Diagram,ADDYOURTITLE,.,Diagram,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,A,B,.,Diagram,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,.,Diagram,.,Diagram,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,.,Diagram,TITLE,.,Diagram,ADDYOURTITLE,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,.,Diagram,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,welcometousethesepowerpointtemplates,.,Diagram,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,ADDYOURTITLE,.,Diagram,.,Diagram,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,.,Diagram,.,Diagram,ADDYOURTITLE,.,Diagram,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,welcometousethesepowerpointtemplates,NewContentdesign,10yearsexperience,ADDYOURTITLE,ADDYOURTITLE,welco