In northern climates,it is common to have a layer of frost form on cars that have been out overnight in the winter.During the day the frost layer disappears despite its temperature remaining below freezing.How?

Question

Quizplus · Accepted Answer

The frost disappears during the day despite temperatures remaining below freezing because it undergoes a process called sublimation. This means that the frozen water molecules in the layer of frost transition directly from solid ice to water vapor without first melting into liquid water. Sunlight and warmer temperatures on the surface of the car provide the energy necessary for this transition to occur, causing the frost layer to gradually disappear.

In Northern Climates,it Is Common to Have a Layer of Frost