The fog is a cloud that is low above the ground. We often notice it as a white haze in which poor visibility. But how does it form? Let's find out.
How does fog appear?
It occurs when warm and cold air contacts. Depending on the temperature in the air, a certain amount of steam is formed. In warm air, the couple are greater than in cold. When the pair exceeds the maximum norm at a particular temperature, the fog appears. Fog can be formed both in the summer, spring, and in the fall, in winter. Most often we observe the fog over the river, swamp, ravine, where the water temperature is higher than the air temperature.
At what temperature is the fog form?
If the temperature is very low, then fog can form even with low humidity. Most often, it appears in the air, which contains a lot of dust or other particles where drops of water are fixed.
To a temperature of 10 ° C, the fog is formed in the form of water drops. C - 10 ° C to - 15 ° C The fog is a drop of water and ice interspersed.
In cold regions, where the air temperature greatly decreases even more than -15 degrees, a frozen fog may appear. It consists of ice crystals.
Video: Fog Ed.
