How is snow or rain formed?

What is snow? What is rain? How are they different? How is snow formed? What is fog? All of this and more is answered in this episode as we take a nice walk on a snowy field.

We also talk about how clouds form. Clouds are made from water vapor that cools down as it climbs higher. When the vapor cools it the water precipitates out of the air. The same thing happens on land when warmer moist air cools at night and then we get fog :)