Why does water flow from a spring? Detailed answer

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Why does water flow from a spring? Detailed answer

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Why does water flow from a spring?

The water that flows from the springs once fell in the form of rain. Rain water soaks into the ground and penetrates into the rocky soil through cracks. Of course, some of the water remains at the surface and evaporates into the air, and is also taken up by the plants through their root systems.

The rest of the water, under the influence of gravity, descends as far as the rocky ground allows. Deep underground, at various depths, there are areas where all the voids in the rocky soil are filled with water. Such areas are called "groundwater zone". The upper level of such waters is called the "water level" (boundary of the aquifer).

A spring is formed when there is a natural hole in the ground for water, located below the level of this layer of water. That is why many springs are located in valleys or other low places. Groundwater flows through springs along rocky voids along the bottom or along the slopes of similar lowlands. The spring is also subject to gravity: water flows from top to bottom.

Some springs are fed with water from the aquifer. They operate all year round and are called "permanent". For other springs, their channel connecting the surface with the aquifer is located in close proximity to the upper water level of this layer. Such springs operate only during rains, when the water level rises. They are called "pulsating".

Spring water passes through the rocky soil underground, so it contains some minerals, such as sulfur, lime. Springs, the water of which contains significant amounts of mineral salts, are called mineral springs.

In some areas, especially where there has been volcanic activity, water comes into contact with heated underground rocks. Such sources are called "thermal".

An artesian well is different from a spring. In such a well, rainwater seeps down until it reaches a layer of porous rocks located between two layers of monolithic rocks. This water is under pressure from all sides, and when a well is drilled in this place, the water bursts out with force. The well should be drilled in a place that is below the point where water enters the ground.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

When did ballet appear?

What is ballet? This is a type of theatrical performance that combines several things: dance, scenery and music. Some ballets have a plot, others simply reflect an idea or mood. When you watch a ballet, you see the human body take on the most elegant and harmonious poses. All this requires long intense training of dancers in order to look natural and beautiful during the performance.

Ballet is about 500 years old. It originated in Italy at the time when Columbus was discovering America. But it was completely different from today's ballet. In those days, ballet was a form of palace entertainment. Italian aristocrats entertained themselves and their guests with performances that combined dance, music, pantomime, poetry and drama. Thus, the first ballet dancers were royalty and titled persons, and there were no professional dancers.

The dance steps were taken from the elegant but rather simple court dances of the time, and the dancers did not wear dancing shoes. However, such dances were not called ballet until the reign of King Henry III of France.

In 1581, Queen Catherine de Medici ordered grandiose celebrations in honor of the royal wedding. A breathtaking ballet was put on with hundreds of dancers, singers and actors. It was choreographed by the Italian musician Beaujuol. He was probably the first choreographer or dance director. Beaujouol called his work "Royal Comic Ballet", and since then performances of this kind have been called ballets.

The lead dancer in a ballet group is called a prima ballerina. The first prima ballerina was La Fontaine, who danced in 1681.

Later, various changes and improvements were made to the ballet.

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