Wednesday, May 12, 2010
Thursday, May 6, 2010
SNOW FORMATION
How is snow formed? Snow is formed when water vapor in the clouds that have condensed into ice crystals. Snow begins as a tiny ice crystal, when there is a lot of moisture in the air and then condensation occur. Then it starts to stick if the temperature gets cold enough the tiny drops of start to freeze and become ice crystals. This is how ice crystals and they eventually snowflakes get there shape. The moisture drop cling and freeze together randomly.
How dose snow fall? As the snow gathers more ice crystals it gets heavier. And then the snowflake will be heavy enough that the force of the air will no longer be able to keep it up in the clouds. So it falls from the clouds to the Earth. The snow's mass is affected by gravitational force from other items of mass. Gravity causes the snow to be attracted to each other.