A snowball is a spherical object made from frozen water or snow, usually created by scooping snow with the hands, and compacting it into a roughly fist-sized ball. The snowball is often used to engage in games, such as snowball fights. Snowball fights are usually light-hearted and involve throwing snowballs at one's friends or family. The pressure exerted by the hands on the snow is a determinant for the final result. Reduced pressure leads to a light and soft snowball. A higher pressure causes 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 called an iceball, which eventually can be considered harmful during a snowball fight. The process of melting and refreezing is called regelation.
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A snowball is a spherical object made from frozen water or snow, usually created by scooping snow with the hands, and compacting it into a roughly fist-sized ball. The snowball is often used to engage in games, such as snowball fights. Snowball fights are usually light-hearted and involve throwing snowballs at one's friends or family. The pressure exerted by the hands on the snow is a determinant for the final result. Reduced pressure leads to a light and soft snowball. A higher pressure causes 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 called an iceball, which eventually can be considered harmful during a snowball fight. The process of melting and refreezing is called regelation.
A snowball may also be a large ball of snow formed by rolling a smaller snowball on a snow-covered surface. The smaller snowball grows by picking up additional snow as it rolls. The terms "snowball effect" and "snowballing" are named after this process. This technique is often used to create snowmen.
There are some temperature/humidity ranges that prohibit or restrict the formulation of a snowball. With a powdery snow, snowballs are difficult to form. If you're walking on snow and it squeaks, chances are the temperature/humidity level won't form a snowball.
Current world record
Students of Michigan Technological University rolled the world's largest snowball on February 10, 2006. It was 21 feet 3 inches in circumference (81 inches or 2.06 metres in diameter).
Heraldry
The snowball occasionally occurs as a charge in heraldry.
