On freezing days, frost often forms on windows. Why is there usually more frost on the bottom portions of the windows?
Solution 19E In freezing days, inside window used to be a little hotter than the outside. This causes condensation outside the window. Like when you put some ice cubes inside a glass, there will be water droplets on the outside surface of the glass. This is a similar analogy which is not exactly the case which happens for the frost on the windows. Once condensation happens, because of gravity it moves downward. So there are more frost on the bottom part of the window. One more reason is, the water molecules are heavy and they use to move downwards.