冰为什么慢慢变小了？
Why does ice get smaller?
天气暖和时，冰会变成水，所以看起来慢慢变小啦。
When it is warm, ice turns into water, so it seems to get smaller.
来源 · Source
秦允豪,《热学》,高等教育出版社,2011
Qin Yunhao, Thermal Physics, Higher Education Press, 2011
heat Physics
6 个科学问题 · 物理 Physics
本页目录
冰为什么摸起来凉凉的？
Why does ice feel cold to touch?
冰会把手指上的热带走，手指少了热，就觉得凉。
Ice takes heat away from your finger, and with less heat your finger feels cold.
来源 · Source
秦允豪,《热学》,高等教育出版社,2011
Qin Yunhao, Thermal Physics, Higher Education Press, 2011
我们怎么知道东西是冷还是热？
How do we know if something is cold or hot?
皮肤里藏着温度感受器，它们把冷热变化变成信号告诉大脑。
Sensors in your skin turn changes in temperature into signals that tell the brain hot or cold.
来源 · Source
秦允豪,《热学》,高等教育出版社,2011
Qin Yunhao, Thermal Physics, Higher Education Press, 2011
火为什么是烫的？
Why is fire hot?
火在燃烧的时候会放出热量，所以靠近它就觉得烫。
Fire gives off heat while it burns, so it feels hot when you are near.
来源 · Source
秦允豪,《热学》,高等教育出版社,2011
Qin Yunhao, Thermal Physics, Higher Education Press, 2011
火为什么需要空气才能烧？
Why does fire need air to burn?
火要吃掉空气里的氧气才能燃烧，没有了氧气火就灭了。
Fire needs oxygen from the air to burn, so without oxygen the flame goes out.
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
为什么摸金属比摸木头更凉？
Why does metal feel colder than wood?
金属传热很快，会把手上的热带走，所以摸着比木头凉。
Metal carries heat away from your hand quickly, so it feels colder than wood does.
来源 · Source
秦允豪,《热学》,高等教育出版社,2011
Qin Yunhao, Thermal Physics, Higher Education Press, 2011