提出问题到了寒冬腊月,天非常冷,外面下了一场很大的雪,许多小朋友在打雪仗,可热闹啦!到了下午,太阳出来了,有些地方的雪在阳光的照射下开始熔化了,但是晓聪感觉似乎比下雪时还要冷些.他真正体会到了俗语“下雪不冷,化雪冷”的滋味.他想:化雪时为什么会更冷些?雪在熔化过程中温度是不是上升呢?带着这个疑问,晓聪和他的朋友小丽一起展开了探究. Ask questions to the winter months, the day is very cold, outside under a lot of snow, many children in the snowball fight, can be fun! In the afternoon, the sun came out, in some places the snow began to melt in the sunlight, but Xiao Cong seems to feel even colder than when he was snowing, and he truly understands the saying “Snow is not cold and snow is cold.” He thinks: Why snow will be colder when it is snowing? Temperature is not up? With this question, Xiao Cong and his friend Mary began to explore.