This will sound just a little daft but why is snow... well snow, and not
ice?
Why is it that a snow flake is a flake rather than a pellet? What is it
that makes the water expand to form a flake rather than just freezing to
be an ice drop?
We were pondering this last night and I suggested the smart bods on here
would know the answer.

A bear of very little brain,

Sniper8052

Originally posted to UK rec Cycling who were highly informative but
convinced you lads and lasses would love to get technical.