Allow the beaker to sit at room temperature until the snow melts. Measure the amount of water in the beaker. Subtract this value from 400 mL to determine the amount of air in the snow. Snowflakes trap air between them as they fall to the ground. Newly fallen snow is often light and fluffy because of this trapped air.
Temperature also affects the fluffiness of newly fallen snow.
As a rule of thumb, snow falling at temperatures slightly above freezing is less fluffy than snow falling at temperatures well below freezing. This is because at warmer temperatures snow begins to melt, and the trapped air is displaced by water, which reduces the fluffiness of the snow. Snow Watch . Kids Can Press. For kids ages 9 to 12.