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What is frost?

Tamara Kovalenko
Tamara Kovalenko
March 28, 2013
What is frost?

Ordinary water has several of its states: solid, liquid, gaseous. The transition from one state to another leads to different types of water, incl. and snow, ice, frost. What is frost? Let's talk about it below.


Frost is a thin snow layer resulting from evaporation on a cooling surface in cold weather (at night). From breathing, a frost appears on the face of the person on the collar, chin, eyelashes. Air, at different temperatures, contains a different number of water molecules, i.e. humidity is different. When frost, land, grass, objects on the street are very cool. If there is a decrease in temperature, the amount of moisture in the air begins to decrease, and excess moisture then condenses on colder surfaces, thus forming dew. If the temperature drops below, overcoming the freezing point of water, then the water, crystallizing, turns into frost.


Hoarfrost does not form on thin objects. On wires, on branches of trees the frost is formed.The formation of frost differs slightly from the formation of frost. Frost is formed when water vapor freezes, ice crystals grow on thin objects at negative temperatures, with fog, thick haze, and weak wind.

How to make a frost on your own

At home, you can get the frost by taking the following components:

  • can,
  • pieces of ice
  • salt.

In a tin can at the bottom put small crumbs of ice, then salt, then ice again, etc. After some time, the water droplets that are in the air begin to cover the jar outside, turning into small ice crystals that will cover the jar with a thin layer of frost. The transition of water molecules from the gaseous state, bypassing the liquid, to the solid state is called sublimation.


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