Q. What is ice?
A. Frozen Water. When the air is reduced to 32 degrees of heat, water will no longer remain in a fluid state.
Q. Why is solid ice lighter than water?
A. Because water expands by freezing; and as the bulk is increased, the gravity must be less.
Nine cubic inches of water become ten when frozen.
Q. Why do ewers break in a frosty night?
A. Because the water in them freezes; and as the water is expanded by frost, it bursts the ewers to make room for its increased volume.
Q. Why does it not expand upwards (like boiling water), and run over?
A. Because the surface is first frozen, and the frozen surface acts as a plug, which is more difficult to burst than the earthen ewer itself.