00:02
Hi there.
00:03
In this question, we have a pile of snow, and we know that snow is the solid form of water.
00:15
And we also know that when it gets above freezing, the snow can melt and become liquid water.
00:26
And we know if we heat liquid water on our stove or just water can evaporate so it can vaporize to form gas.
00:40
Okay, but in this question, we are told that the 10.
00:43
Temperature doesn't rise above the freezing point, and yet the solid is disappearing.
00:51
And it wants to know why.
00:52
Well, the answer to that is there is another phase change here, besides the solid to liquid and liquid to gas, there is also a phase change where solid can go directly to gas, and that is called sublimation.
01:12
So our answer here is that some of the snow supplements to become water vapor.
01:34
And lots of things supplement...