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Here’s something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool.
這是我們習以為常的事情：在室溫狀態下將冰塊放入水中，幾分鐘后水會變涼。
How does this work?
這是什么原理呢？
Heat is a measure of molecular activity: the faster a thing’s molecules move, the more heat that substance contains.
熱量是分子活動的指標：分子移動的速度越快，物體所含的熱量越多。
And because everything is made of molecules, and molecules are in constant motion, everything contains at least some heat.
由于所有物質都是由分子組成，而分子一直在活動，因此每個物體或多或少都包含一些熱量。
As we know, ice is colder than room temperature water.
眾所周知，冰的溫度低于室溫狀態下的水。
Because ice molecules move slowly and cluster tightly together, they produce a relatively low amount of heat.
由于冰分子移動緩慢且聚集得十分緊密，因此它們產生的熱量相對較少。
When ice is placed in a glass of water whose molecules are moving at a greater rate, the ice begins to absorb energy,
如果將冰塊放入一杯分子移動較快的水中，冰塊會開始吸收熱量，
because heat always travels from regions of relative warmth to colder areas in order to equalize temperatures.
為了使溫度均衡，熱量會從高溫處向低溫處轉移。
譯文為可可英語翻譯，未經授權請勿轉載!
