七年级科学温度的测量电子教案.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,中考资源网,*,温度的测量,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,温度,物体的,冷,热,程度,（temperature）,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,小实验：,热水,冰水,温水,感觉怎样？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,结论：,凭感觉来判断温度的高低是,不可靠,的,！,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,讨论,：,为什么我们会感觉冬天的井水比较暖和，而夏天的井水比较凉快？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,温度计：,测量温度的工具,3、,原理,：,4、,单位：,1、种类：,利用水银、酒精等液体的热胀冷缩的性质制成的,摄氏度（,o,c）,酒精温度计,、,水银温度计,、,体温计,等,2、,结构,：,玻璃泡、玻璃管、水银等,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,酒精温度计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,水银温度计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,体温计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,体温计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,观察并思考:,体温计与一般温度计的区别，体温计为什么可以取出读数？,1、玻璃泡与玻璃管之间有一段特别细的弯曲的玻璃管,2、量程：35,0,C42,0,C,3、最小刻度：0.1,0,C,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,双金属温度计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,光测温度计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,辐射温度计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,电子温度计,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,讨论,：,如何正确使用温度计，使用温度计应注意哪些问题？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,正确使用温度计,1、,使用前,：,观察,量程,2、,测量时：,玻璃泡与被测物,充分接触,3、读数时：,不能将温度计拿出，视线与温度计内液面相平,4、,记录,时,：,注意单位,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,其它一些测量方法:,电子温度计,、,金属温度计,、,光测温度计,、,辐射温度计,、,色带温度计,等,卫星遥感、光谱分析等,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,所示的读数?,或“零下七度”,10,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,所示的读数?,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,想一想：,所示的为多少度？,正确答案为：23,o,c,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,讨论,：,如果给你一只没有刻度的温度计，你该怎么办？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,小 结,、常见温度计,、温度计的结构和原理,三、摄氏温度,t,四、体温计,实验用温度计体温计 家庭温度计,二、温度计,一、温度,、温度计的使用 a、观察 b、使用,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,一、填充题,1,常用温度计是根据,_,的性质制成的。所用液体可以是,_,、,_,或,_,。,2,实验室常用的是水银温度计，它的下端是,_,，上面连着一根内径很细的,_,，当温度稍有变化时，细管内水银面的,_,就会有变化。,补充练习,液体热胀冷缩,水银,酒精,玻璃泡,玻璃管,位置,煤油,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,3,温度计上的字母“”表示这个温度计采用,_,温标，它的低温点是,_,大气压下,_,的温度定为,0,度，高温点是,_,大气压下,_,的温度定为,100,度。,4,体温计的最小刻度是,_,，测量范围从,_,到,_,。,摄氏,一个标准,冰水混合物,一个标准,沸水,0,.,1,35,42,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,3,-,20,的正确读法是,A,零下,20,度,B,零下摄氏,20,度,C,负摄氏,20,度,D,零下,20,摄氏度,D,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,中考资源网,