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“颜色与吸热”是小学五年级上册的一个实验,不同颜色的材料吸热本领一样吗?该实验是利用材料相同的小瓶,分别用大小相同的黑、红、白色的纸或布包起来,尽量包严实。再分别插入一支初始温度相同的温度计,并将小瓶放在阳光或灯光下照射,观察温度的变化,并记录在表格中。然后分析实验结果,得出初步结论。这个实验存在着以下不足:(1)用时长,每次实验要用10分钟,而且,至少用两次实验,要用20分钟,才能得出结论。(2)用温
“Color and heat-absorbing ” is an experiment in the fifth grade of primary school, different colors of materials endothermic skills the same? The experiment is the use of the same material vial, respectively, with the same size black, red, white paper or cloth Pack up, try to pack tight. Then insert a thermometer of the same initial temperature, and the vial placed in the sun or light irradiation, observe the temperature changes, and recorded in the table. Then analyze the experimental results, draw the preliminary conclusions. This experiment has the following deficiencies: (1) with the length of time, each experiment takes 10 minutes, and, at least two experiments, it takes 20 minutes to draw conclusions. (2) with warm