Water is the basis of life on planet Earth. Its cycle in nature makes you think about how dew, hoarfrost, rain and snow are formed. Changes in temperature and pressure contribute to the rapid crystallization of fluid particles. And the morning coolness causes drops to form on the grass. The movement of the wind affects the change of winter and summer. So we observe the appearance of thunderstorms and snowflakes.
Shower
Considering the question of how dew, hoarfrost, rain and snow are formed, you should familiarize yourself with each natural phenomenon. The surface of the water is heated by the sun during the day. Constant evaporation of moisture occurs, even in cold weather. The smallest particles of liquid rush up. They are found in cold air.
When cooling, the particles combine and a cloud forms. It moves under the influence of wind above the surface of the earth. Cooling gradually, it turns blue. Water molecules are getting closer to each other until they merge into a drop. It freezes and is already becoming heavy, falling down. So begins a real summer rain.
Reaching a certain height, where the air is already much warmer, the crystalline begins to melt. Summer rain becomes stronger the longer the evaporation of water and the accumulation of its particles in the sky continued.
Fog
Studying particles suspended in the air, you can understand in more detail how dew, hoarfrost, rain and snow are formed. One such phenomenon is fog. It is a cloud that did not have time to rise up, when, due to weather conditions, the upper layers are quite cold. Vapors cannot penetrate through them, and the temperature above the surface is still not enough to form droplets.
Fog often forms in the morning, the temperature above the surface at this moment drops. The air becomes cold and the vapors are not able to rise high. Ponds, lakes and rivers continue to cool, transferring heat with water molecules to the surrounding space.
When the air gradually warms up, the particles of steam either rush up or settle on the grass. So there are droplets of dew. Indeed, more often we observe them at dawn. Fog accumulates in hilly areas where there are ravines, ravines, lowlands.
Drops on plants during dawn
Everyone faced the phenomenon when every morning dew appeared on the leaves of grass, trees, and other plants. Settling droplets are the result of the continuous movement of water in nature. This happens at a time when the sun has already begun to warm the upper layers of air. As a result, the condensate becomes heavier and gently descends.
When it accumulates near objects, plants, dew drops form. Even things left on the street get wet in the morning.
The formation of dew is preceded by a day with clear weather, when there are no suspended particles of water in the sky. Under such conditions, the greatest evaporation of moisture from the surface of the earth occurs. Drops on plants can only be seen in warm weather. In winter, they turn into ice, called hoarfrost.
Winter snowflakes
Cloud precipitation in the form of crystals, which are patterned flakes, are called snow. Natural phenomenon refers to the water cycle in nature. Snowflakes consist of fresh water, only in the modern world they are not always clean. In the air near megacities, there are contaminants that attach to particles of liquid during freezing.
Crystals during planning from the sky gradually increase in size. In winter, we see a huge number of snowflakes on the ground. When the frost is strong enough, they do not melt and you can clearly see each individual particle.
Researchers noticed that snowflakes always have regular geometric shapes: they are six-pointed, the angles between the tips are the same, but the pattern is always different. These data were obtained by examining the crystals under a microscope. A specific crunch when pressing on snow in cold weather is associated with the destruction of ice.
Hail
To find out how dew, hoarfrost, rain and snow are formed, you need to familiarize yourself with the process of hail formation in the sky. Often this phenomenon is observed in the summer in hot weather. The mechanism of the formation of ice balls is associated with a cold stream of air encountered with the heated lower layers.
To understand the principle of hail formation, the researchers sawed an ice ball and saw the heterogeneity of the structure. The layers differed in color and density. At the highest point of the atmosphere, particles of water fog freeze immediately, not having time to turn into drops. Under the influence of gravity begin to fall, overgrown with surrounding molecules of the liquid.
Flying through the cloud, the ice becomes heavier, then in the warm stream, the upper layers of the ball melt. But the hailstones very quickly fly down and do not have time to completely melt. Therefore, they turn out so smooth.
Ice
When there is severe frost on the street , frost may form in the morning from the fog that has risen during the night. During the day, the active evaporation of water from the surface of the earth under the influence of the sun. Ice on the branches of trees is formed due to the cold upper atmosphere, when particles of water are not able to rise up. The phenomenon is preceded by clear and dry frosty weather.
Snow does not always lie on the ground, frost appears due to a sharp cooling. The mechanism of water movement is similar to that observed during rain, only the entire cycle occurs at a low altitude. No clouds are formed, the condensed condensate quickly turns into ice.