AyeRight topical information service up and on-line now: As the white stuff keeps tumbling out of the sky the Met Office offers some snow education
'How does snow form?
Snow crystals form in clouds when the temperature is below freezing. They are made by water droplets freezing onto ice particles. As an ice crystal falls through the cloud it bumps into others and becomes a snowflake. This processing of bumping into others, along with some melting and re-freezing helps to form their complex design. The air that the snowflake falls through has to be below freezing otherwise the snowflake will melt and turn to rain.’
No comments:
Post a Comment