小学科学 苏教版 四年级上册 《吸热和散热》部优课件

1、欢迎大家W E L C O M E液体加热和冷却的秘密苏教版小学科学四年级上册第二单元第4课吸热和散热口令1观察0时刻温度并记录；口令2正确点燃酒精灯；口令3移入酒精灯开始加热；每隔30秒记录一次数据；停止加热时(300)移出酒精灯；实验结束后记得保存数据。时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.96050403020100000030100130200230300330400430500530600630700时刻温度（）时 间000030100130200230300

2、330400430500530600630700温 度28.434.140.443.947.953.157.761.96050403020100000030100130200230300330400430500530600630700时刻温度（）表 格折 线 图时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.9折线图时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.9

3、6050403020100000030100130200230300330400430500530600630700时刻温度（）时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.96050403020100000030100130200230300330400430500530600630700时刻温度（）28.4时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.960

4、50403020100000030100130200230300330400430500530600630700时刻温度（）34.1时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.96050403020100000030100130200230300330400430500530600630700时刻温度（）时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.90000

5、301001302002303003304004305005306006307006050403020100时刻温度（）折 线 图6050403020100000030100130200230300330400430500530600630700时刻温度（）时 间000030100130200230300330400430500530600630700温 度28.434.140.443.947.953.157.761.96050403020100000030100130200230300330400430500530600630700时刻温度（）将手中的纸质记录单和其他组进行 交换；不告诉 对方本组实验的液体是什么；将其他