Snowball

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Image:Snowpyramids.jpg

A snowball is a ball of snow, usually created by scooping snow with the hands and compacting it into a roughly fist-sized ball. The snowball is necessary to hold a snowball fight. The pressure exerted by the hands on the snow is determinant for the final result. Reduced pressure leads to a light and soft snowball. A higher pressure cause the snow to melt, turning into liquid water. Once the pressure is removed, the water turns again into ice, leading to a more compact and hard snowball, which eventually can be considered harmful during a snowball fight.

The historical significance of snowballs

Heraldry

The snowball occasionally occurs as a charge in heraldry.