Heat Questions

热学问题

How is it that you can have both water and ice at 0 C and both water and steam at 100 C? A lot of energy goes into these phase transitions. Why doesn't it change the temperature?

为什么在0°C时可以同时有水和冰，在100°C时可以同时有水和蒸汽？很多能量用于这些相变。为什么它不会改变温度？

If you have steel and wood at 0 C, which feels colder? If you have steel and wood at 100 C, which feels hotter?

如果你有0摄氏度的钢和木头，哪一种更冷？如果它们都是100摄氏度，哪一种更热？

Will hot water freeze into ice cubes faster than cold water in your freezer?

在你的冰箱中，热水比冷水结冰更快吗？

If you have a cup of coffee which is too hot to drink, should you add cream to it immediately to cool it or let it stay black and sit for a while before adding cream? The object is to get it cool enough to drink in the shortest possible time.

如果你有一杯太热而无法饮用的咖啡，应该立即加奶油来冷却它，还是让它保持黑色，过一会儿再加奶油？目的是在最短的时间内将它冷却到可以饮用的程度。

What is the difference between evaporation and boiling?

蒸发和沸腾有什么不同？

If you heat a uniform metal plate with a hole in it, will the hole get larger or smaller?

如果你加热一个有孔的均匀金属板，孔会变大还是变小？

Heat flow is normally from a high temperature toward a low temperature region. How do you manage to cool your body on a July day when the temperature is 102 F (compared to 98.6 F normal body temperature)?

热量通常从高温区域流向低温区域。在炎热的七月天，当气温为102华氏度时，你如何降温，因为正常体温是98.6华氏度？

Everyone knows that heat flows from a hot area to a cold area. How then does your refrigerator get it to flow from the inside of its freezing compartment to the warm outside, "uphill" for heat?

大家都知道热量是从热的区域流向冷的区域。那么，冰箱是如何让热量从冷冻室内部流向外部较暖的环境的呢，这似乎是对热量的“逆向”流动。