同样条件下，100摄氏度的水冷却得快还是50摄氏度的水冷却得快？
推荐回答（5个）
热水比冷水降温快！
事实上，在一般实验条件下，热水会比冷水更快结冰。这种现象违反直觉，甚至连很多科学家也感到惊讶。但它的确是真的，曾在很多实验观察和研究过。虽然在经过亚里斯多德、培根，和笛卡儿 [1- 3] 三人的介绍后，此现象已被发现了几个世纪，但却一直没有被引入现代科学。直至1969年，才由坦桑尼亚的一间中学的一个名叫 Mpemba 的学生引入现代科学。这个效应早期发现史，和后期 Mpemba 再发现的故事－－尤其是后者，都是充满戏剧性的寓言。寓意人们在判断什么是不可能时，别过于仓促。这一点，下面会说到。
你也是新初一在做科学作业的吧~~~自己搜啊,我好了.
姆潘巴现象是世界物理界知名度很高的一道疑题. 起源是1个中学生姆潘巴做冰淇淋时偶然发现热奶比冷奶先结冰. 后来这个问题变成了“热水比冷水先完全结成冰块“.这些孩子向累斯萨拉姆大学物理系主任奥斯波恩博士提问“热水比冷水先完全结成冰块"的问题.于是这个问题开始成为世界物理界知名的问题. 他们的实验证明，姆潘巴发现的现象属实。四十多年来，许多论文与实验试图阐明这个现象背后的原理，但至今没有定论。
看上去 ,简单的想,按推理,应该是冷水先,可是却是热水先. 这说明好多事情有人们没有考虑到的细节. 那么一些不符合平常理论的事情也未必就是不存在的,而是理论的推理有疏忽.
所以,在面对别人不合平常理论的研究时,也应当慎重.不应当随便排斥.
"同样条件下"是什么条件,根没有条件一个样,影响冷却的因素太多.
这主要是问能量的释放效率这与周围环境有着密切的关系,但100摄氏度的水比
50摄氏度的水能量大,如果能量释放的速度是一样的话,还是50摄氏度的水先结出冰晶,但冷却速度是一样的.实际水能量中是以复杂的曲线下降,某一瞬间水冷却的快说不准.
谁冷却的快是比单位时间释放的能量,时间长,放热多,时间短放热少,那个冷却的快.
100度吧,因为在相同条件下,100度的热水比50度的热水的温度差大,它的热量流失也是大的,所以它回比较快结冰.
冷的水降的快,因为100度的水降温降到与50度的水一样的时候,50度的水也下降了,这样就冷的水降的快
100，与室温相差大，降得快。
试想，一杯与室温比较接近的水在与空气进行热交换需要多长的时间才冷却下来，生活中温水是不是不容易变凉呢？
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