This year, snow has fallen late in the hilly areas including Jammu-Kashmir and Himachal. As soon as it snows, tourists go out to see the snow fall. But has this question ever come to your mind that why snow falls only on the mountains? Today we will tell you the reason behind this.
Why does snow fall only in hilly areas
The main reason for snowfall in hilly areas Those areas have to be at a much higher altitude than sea level. The cold climate of hilly areas for most of the year also plays a big role in snowfall. Not only this, sometimes snow also falls on the earth in the form of hailstorm. After this, while coming down, the ice pieces pass through the ozone layer, where they melt due to high temperature. After this they fall in the form of snow flakes in the hilly areas. Due to the low temperature in the hilly areas, the melted snow turns into ice again. Whereas in the plains, it falls in the form of rain instead of snowflakes.
Reason for snowfall
Due to the heat of the sun, water in oceans, lakes, rivers and ponds evaporates as steam. At the same time, the weight of steam becomes lighter than the air of the atmosphere. Therefore it keeps rising higher in the sky. After this, after going up, this steam takes the form of a cloud according to the temperature there. But when the temperature above is at the freezing point, this steam starts turning into ice. After turning into ice, their weight increases, due to which they start moving downwards. However, their size keeps increasing and decreasing while coming down. At the same time, due to strong wind, small snow flakes collide with each other and scatter. Due to this also, the level of snowfall varies in the same area.
Moisture in the atmosphere
According to science, snowfall is responsible for It is very important to have moisture in the environment. This is one of the main reasons that snow storms depend to a large extent on temperature. However, according to science, for ice to form, the atmospheric temperature must be zero degrees Celsius or below. In the language of science, this temperature is called freezing point. In simple language, if the ground temperature is at or below freezing point, there will be snowfall. However, in some situations, snow can fall even when the ground temperature is above zero.
It is not necessary for snowfall to occur when it is cold.
According to science. When the ground temperature is -9 degrees Celsius or more. In that situation cold air can hold more steam. Science says that moisture is required for snowfall. This is the reason why snowfall does not occur in dry areas even when it is cold. The Dry Valleys of Antarctica are the continent’s largest ice-free area. Because dry valleys are cold, but there is very little moisture in them. At the same time, the strong winds blowing in the valley also absorb the remaining moisture in the air. For this reason too, despite extreme cold, there is no snowfall.
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