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8 interesting facts about snow
1. Snowflakes are made up of 95% air. That is why they fall very slowly, at a speed of 0.9 km / h.
2. Why is snow white? Just because the snow has in its structure the air. Thus all rays of light is simply reflected from the boundary of the ice crystals with air and dispersed.
3. But in the history there have been occasions when the snow fell another color. For example, in Switzerland, in 1969, black snow fell, just at Christmas, and in 1955 at the California green snow fell.
4. in the high mountains of Antarctica and found the snow pink, purple, red and yellowish-brown color. This is facilitated by the creatures that live in the snow and called Chlamydomonas snow.
5. When a snowflake falls into the water, it makes a high frequency sound that can not be detected by man, but, according to scientists, it is not like fish.
6. Snow normally melts at a temperature of 0 degrees Celsius. However, a significant amount of snow can evaporate at temperatures below zero, bypassing the transformation of the liquid phase. This process occurs when the sun's rays fall on the snow.
7. In winter, the snow reflected from Earth's surface up to 90% of sunlight, directing them back into space, thus preventing the Earth to warm.
8. during a snowfall in 1987 in Fort Here and (Montana, USA) was discovered snowflake-world record holder with a diameter of 38 cm.
Source: www.muz4in.net
via factroom.ru
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