How water makes a cycle in nature briefly. The water cycle in nature: interesting facts. In places of the anticyclone - clear calm weather. In places of the cyclone - rainy inclement weather

Water is the basis of all life on Earth. The amount of liquid on the planet does not change throughout the existence of the world, but the water cycle in nature occurs continuously. Without this process, life on Earth would not exist.

The water cycle gives rise to many curious circumstances. Here are the most Interesting Facts:

1. Pierre Perrault, who built the Louvre plumbing, began talking about hydrocirculation back in the 17th century. It took two centuries before scientists proved that the water cycle works like this:

• water evaporates from oceans, reservoirs and the earth's surface;
• steam rises into the atmosphere, moves by air currents to different parts of the planet;
• in cold areas, condensation occurs and moisture sinks down in the form of precipitation or dew.

2. As a result of the cycle, water is purified, changes its composition and appearance (salty becomes fresh, ice turns into liquid, drops lose or are filled with trace elements). As it circulates, water carries useful components, but microbes and viruses travel with moisture. 85% of known diseases can be contracted through water.

3. Water is completely renewed in the atmosphere in a week and a half, and in the ocean - in 3.5 thousand years. The raindrops you see were in the ocean about 2 months ago.

4. Water in nature moves due to the Sun and gravity. In addition to the atmosphere, water is carried by rivers, underground currents and living organisms.

5. Approximately 306 billion liters of water per day is poured onto the earth from the atmosphere. Most of the precipitation falls on the Hawaiian island of Kauai (an average of 11,684 mm per year, and this is just one of the records). And in the desert, the rain evaporates before reaching the sand.

6. The use of water by mankind does not reduce its amount in nature. The resources involved by people are involved in the turnover and fall back into water bodies and soil. Pollution is harmful, because the chemicals and heavy metals with which we “charge” water are carried through the atmosphere, seas and oceans. Acid rain is the result of human negligence.

But in nature there is no absolutely pure (distilled) water. Only a human can make it like this.

7. In the ocean, water is not only salty, but also nutritious thanks to plankton. Scientists claim that in terms of its nutritional value only Atlantic Ocean estimated at 20,000 crops, which are harvested throughout the year throughout the land.

8. The water cycle contributes to the thermoregulation of the earth's spheres and affects the climate. The greenhouse effect disrupts water circulation. Some scientists argue that glaciers are melting, precipitation is increasing, and as a result, the planet will overflow with water. Others believe that rising temperatures increase evaporation, so the Earth is threatened by drought.

9. In human body 70% water. Losing 1%, we are thirsty. A lack of fluid in 20% is fatal.

10. The water cycle is not only about movement on the surface of the planet. Underground streams are a huge reservoir of liquid that moves and interacts with the external environment (replenished by rain through the ground, splashes out through geysers, springs, streams in valleys and ravines).

The water cycle is a natural phenomenon, the key to our existence. Man's careful attitude to water resources will help nature preserve its unique property to give and support life on the planet.

The main fluid of the planet

Water is the most important component of the life of any biological organism on Earth. Therefore, it is important to study, observe and monitor the quantity, quality and condition of the planet's water resources. The main reserves of this life-giving moisture are concentrated in the oceans. And already evaporating from there, moisture nourishes the Earth, thanks to a process called the water cycle in nature. Water is a very mobile substance and easily changes from one state to another. And, thanks to this, it can easily reach the most distant corners from the source. How does this process take place?

How and why does water circulate?

Under the influence of heat radiated by the Sun, water constantly evaporates from the surface of the ocean, turning into a gaseous state. Together with the currents of warm air, the steam rises up, forming clouds. They are easily blown away by the wind from their original place of evaporation. Gradually capturing all new vapors on their way, the clouds cool down on the way up. At some point, the next stage begins - condensation. It is possible when the air comes to a state of saturation (100% humidity) with water vapor. This usually happens when there is sufficient cooling. It is known that the maximum amount of steam that can be held in the air is proportional to its temperature, therefore, at a certain moment of cooling, the cloud becomes saturated with steam, which leads to the transition of water to the next - liquid or crystalline - state. And if the cloud at that moment is still above the ocean, then the moisture returns to where it came from. Thus ended one small water cycle in nature. This process never stops. Water over the world's oceans is constantly circulating.

How water circulates over land

Not all moisture falls back into the ocean. A large amount of steam, together with the trade winds and monsoons, goes deep into the continents, falling as it moves in the form of precipitation to the Earth. Some of this moisture is retained in the upper layers of the soil, nourishing the plants, the other part flows down to streams and rivers, so that, having reached the seas and oceans, it evaporates again and enters the next water cycle in nature. A very small proportion of the precipitation will seep through the soil deep into, and, having reached the waterproof layer (clay, rocks), will flow down this slope. Some of the groundwater will find its way back to the surface, forming crystal clear water springs to later flow into rivers and evaporate again for the next cycle. And the other part of them, through cracks and crevices, will continue to seep into the bowels of the Earth until it reaches layers with a high temperature, where it will again turn into steam in order to spin again in the underground circulation or break out to the surface as a thermal source.

Water routes in nature

Every year, about four hundred thousand cubic kilometers of water evaporate into the air, and only one fifth of them falls on land, the area of ​​\u200b\u200bwhich is three times smaller than the surface of the world's oceans. Water evaporates from the land surface not only by soil, but also by vegetation: every leaf on a tree and every blade of grass on Earth. Tracking all the possible travels of water is extremely difficult. But to simulate a greatly simplified version that demonstrates the water cycle in nature for children is quite realistic even in their own apartment.

An experiment demonstrating the evaporation and condensation of moisture

To demonstrate the first stage of the cycle - the evaporation of water from the surface of reservoirs under the action of sunlight - it will be enough to take a glass filled up to half with water, place it in a plastic hermetically sealed bag and attach it with adhesive tape to window glass on a sunny day. After some time (depending on the temperature in the room and intensity of sunlight) you will see that the walls of the bag are fogged up, and after a while, water droplets form on them.

Demonstration model of the complete cycle of the water cycle

A more complex model can be assembled using a container partially filled with blue-tinted water (imitation of the oceans), a transparent, possibly perforated, bag filled with enough sand to rise more than half above the water (land). Close the entire structure as tightly as possible with plastic wrap and secure. Above the "land" put a small container with ice (the ice will create the cold necessary for the experiment in the upper layers of the "atmosphere"), above the "ocean" place a table lamp (the Sun), which will radiate heat. Turning it on, after a while we get on the film, over land, in a cold place, moisture condensate, which a little later will fall on land in drops. And if the bag is perforated, then you can see how moisture, seeping through the sand, flows down to the ocean.

What's left for us to do

The water cycle in the biosphere is a very important process for the entire planet. Violation or loss of at least one link will lead to global and, very likely, irreparable consequences for everyone. Australian and American scientists, based on their observations of the weather, covering 50 years, came to the conclusion that the water cycle in nature due to global warming began to accelerate. And this, in turn, will lead to the fact that arid regions will become even drier, and where the climate is now rainy, even more precipitation will fall. All this proves one thing: humanity should be more serious about its activities, which are inextricably linked with nature.

Water states.. 2

The water cycle in nature. four

Conclusion. 7

References.. 8

Water states

Water in nature can be found in three states: solid, liquid and gaseous. Water is able to move from one state to another - from solid to liquid (melt), from liquid to solid (freeze), from liquid to gaseous (evaporate), from gaseous to liquid, turning into water droplets.

Fig 1. States of water: solid, liquid, gaseous.

liquid water On the surface of the planet there are two types: salty and fresh. Salt water is found in the seas and oceans, fresh water - in rivers, lakes, streams, reservoirs, swamps. Groundwater can be either fresh or saline. In this case, the latter are called mineral waters.

The area of ​​the seas and oceans on Earth is many times greater than the area of ​​all rivers, lakes, swamps and reservoirs combined. Therefore, there is many times more salt water on our planet than fresh water.

Solid water can be represented as snow and ice. Ice on Earth is found in glaciers. Glaciers can be mountain and cover. Mountain glaciers are located on the highest mountain peaks, where, due to low temperatures throughout the year, the snow that has fallen does not have time to melt. The largest glaciers are located in the mountains of the Caucasus, the Himalayas, the Tien Shan, the Pamirs.

Gaseous water is water vapor in the atmosphere that we see from the earth in the form of clouds. Clouds form at different altitudes and therefore have different shapes and forms. Depending on this, clouds are divided into stratus, cirrus, cumulus, etc.

The water cycle in nature

The importance of the water cycle is great, since it not only unites parts of the hydrosphere, but also connects all the shells of the Earth: the atmosphere, hydrosphere, lithosphere and biosphere. Water during the cycle can be in three states: liquid, solid, gaseous. It carries a huge amount of substances necessary for life on Earth.

Under the action of the sun's rays, the world's oceans and land are heated. As a result, water passes from a liquid state to a gaseous state (steam) and rises. The ocean supplies 86% of the moisture to the atmosphere, and only 14% of the vaporous moisture comes from evaporation from the land. The water that evaporates from the surface of the ocean is fresh water. Thus, the ocean can be considered a colossal factory fresh water, without which it is impossible to exist life on Earth. It is known that the temperature in the atmosphere decreases with height. Water vapor, meeting with increasingly cold layers of air, begins to cool and form clouds. On land, the evaporation of water comes not only from the surface of streams, rivers and lakes. Water vapor enters the atmosphere as a result of volcanic activity, and evaporates from the surface of plants.

Often the water that has evaporated from the ocean returns to it in the form of precipitation that falls from clouds located above the seas and oceans. Another part of the clouds under the influence of the wind is transferred to the mainland. There, they can also precipitate in liquid or solid form. Part precipitation gets into the rivers. They, meandering and flowing into each other, ultimately carry water into the seas of the World Ocean or into closed reservoirs such as the Caspian or Aral Seas, replenishing their losses during evaporation. Another part of the water that has fallen to the ground in the form of precipitation seeps down from the land surface and flows back into the World Ocean or rivers with groundwater. This is a very important stage in the water cycle, as it regulates river flow over time. If it were not there, the water in the rivers would be only during short periods of precipitation or snowmelt. A third of the water that falls on the ground in the form of precipitation can penetrate into the soil, and from there rise through the roots to the top of the plant and evaporate through the leaves. This stage of the cycle is very important for plants, since the dissolved minerals necessary for the life of plants come with water from the soil through the roots. Plants do not know how to eat "dry food".

Not all water returns from land to the ocean at the same time. It lingers longest (for hundreds and thousands of years) in glaciers and in deep underground waters.

Water returning from land can evaporate again and fall back onto land. This is how its circulation takes place: ocean - atmosphere - land - ocean. This continuous process of moving water from the ocean to land through the atmosphere and from land to ocean is called the global water cycle in nature.

essential role in the water cycle in nature recently began to play economic activity person. The creation of industry, the destruction of forests, the plowing of vast territories, the drainage and irrigation of lands, the creation of giant reservoirs and dams, the use of water for various economic needs - all this has significantly changed the hydrological processes on Earth. And although economic activity has little effect on the total volume of the hydrosphere, it significantly affects its individual parts. The runoff of some rivers has decreased, while others have increased, and the intra-annual distribution of runoff has changed. As a result of the withdrawal of water from land waters, evaporation has increased in many parts of the world, because it is for evaporation that a significant part of the water withdrawn by man from sources is used.

Part of the water that a person consumes and which is part of his products falls out of the general circulation for a long time, therefore it is called "irretrievably withdrawn". This term, of course, is rather arbitrary, since this water is not completely excluded, but its return may occur with a long delay in time and in a completely different territory. Many branches irretrievably consume relatively little water - no more than 10%. The rest of the water after use is discharged into water bodies in the form of wastewater. They are polluted and render unusable many times the volume of clean water. It is the threat of pollution water resources is now the main danger, much greater than the threat of a physical lack of water.

Conclusion

One of the remarkable discoveries of geochemistry is the establishment that the movement of many chemical elements carried out in the form of circular processes - cycles. It is these elements that make up the earth's crust, liquid and gas shells of our planet. Their cycles can take place in a limited space and over short periods of time, or they can cover the entire outer part of the planet and huge periods. At the same time, small cycles enter into larger ones, which in their totality add up to colossal biogeochemical cycles. They are closely related to the environment.

In the biosphere, as in every ecosystem, the cycle of carbon, nitrogen, oxygen, phosphorus, sulfur and other chemical elements is constantly carried out. Energy enters ecosystems during photosynthesis and is dissipated mainly as heat when organisms use it for their life activities. Due to the continuous loss of energy, it is necessary that it also continuously enter ecosystems in the form of sunlight energy. In contrast, water and batteries make a continuous cycle.

The topic I have considered is very relevant in the light of the current environmental situation. Water is the source of life on earth. But, as it turns out, not infinite. The matter is that pollution of water resources of the earth has at the moment global character.

It is very important to ensure "nature" the normal functioning of its basic metabolic cycles.

Bibliography

1. Zakharov E.I., Kachurin N.M., Panferova I.V. Fundamentals of General Ecology: Proc. allowance. - Tula: TulGTU, 2002.

2. Mirasov O.B. Physics around us. - M., 2006.

3.Nebel B. The science of environment: How the world works: In 2 volumes - M .: Mir, 2006.

4. Odum Yu. Ecology: In 2 volumes - M .: Mir, 2003.

5. Reimers N. F. Protection of nature and the human environment. - M., 2004.

6.Semenov V.P. Kashina O.M. Physical processes in nature. - M., 2006.

7. Stadnitsky G. V., Rodionov A. I. Ecology. - M.: Higher. school, 2006.

8. Fazilov N.R. Physics of nature. - M., 2000.

Nebel B. Science about the environment: How the world works: In 2 volumes - M .: Mir, 2006.

What they tell us and what they teach, and how it relates to reality...

Water is one of the foundations for the emergence of organic life in the Universe. It is one of the most important elements on our planet. Water plays an important role in human life and development, being the main life activity of our body. At school, in science classes, we were told about the water cycle on the planet.

The scheme of this process is very simple. Water evaporates from the surface of the oceans, seas, rivers and lakes, the vapor molecules rise up, where the water condenses in the form of clouds and falls in the form of precipitation (rain, snow, dew) to the ground. In the mountains, snow melts and streams form, which merge together to create rivers ... Have you ever thought about how much snow should constantly melt in the mountains, but there the snow lies all year round and does not melt very much to support the flow of even one river?

Diagram of the water cycle in nature

The diagram above provides only part of the correct explanation for this. natural phenomena and is far from explaining the really real processes occurring with water on the planet. This scheme does not explain why clouds form in winter, since at 30 degrees below zero water cannot evaporate. And in summer at the same height of cloud formation it is by no means hot. We are told that the wind brings clouds from the seas and oceans to the middle of the continent, but in calm weather, clouds also form over land. This diagram cannot explain the difference between the total amount of precipitation and the amount of evaporating water. An even greater mystery is the amount of water carried by rivers.

Scientists have calculated the amount of water on the planet - 1,386,000 billion liters. However, such a huge figure only confuses, because the assessment of precipitation, water vapor in the atmosphere, annual water flows is made in different units of measurement. Therefore, many cannot connect obvious things into a single whole. We will try to analyze the numbers in the usual units of liquid measurement - liters.

If we take into account the entire planet, then for the year falls average about 1000 millimeters of precipitation. In meteorology, one millimeter of precipitation is equivalent to one liter of water per square meter.

The surface area of ​​the Earth is approximately 510,072,000 square kilometers. This means that approximately 510,072 billion liters of precipitation falls over the entire area. This is one third of all water reserves on the planet.

Based on the basics of the water cycle in nature, as much water should evaporate as precipitation falls. However, evaporation from the surface of the oceans, according to various sources, is approximately 355 billion liters per year. Precipitation falls by several orders of magnitude more than evaporates from the water surface. Paradox!?

With such a cycle, the planet should be flooded a long time ago. Another question arises - where does the excess water come from and where does it go? After studying the reference materials, you can find the answer - water is contained in large quantities in the atmosphere. This is 12,700,000 billion kg of water vapor.

A liter of water during evaporation gives a kilogram of steam, that is, in vapor form, 12,700,000 billion liters are distributed in the atmosphere. It would seem that the missing link has been found, but again we have a contradiction. The presence of water in the atmosphere is approximately constant, and if water were irrevocably spilled onto the earth in such quantities from the atmosphere, then in a few years life on the planet would become impossible.

The calculation of water flow in rivers also gives conflicting data. For example, according to Wikipedia, with reference to official sources, the volume of falling water of only one Niagara Falls is 5700 cubic meters per second. In terms of liters, this will amount to 179,755 billion liters per year.

But let's digress from the calculations to admire the beauties of Venezuela. As you can see, the top of the mountain is a flat plateau where there is no snow, glaciers or lakes to support waterfalls enough. Nevertheless, at the foot of this mountain, the rivers of the Amazon, Orinoco and Essequibo basins originate.

And it is impossible to explain the presence of the source of the waterfalls on Mount Roraima according to the school scheme of the water cycle in nature.

Photo of Kukenana waterfall, Mount Roraima, Canaima Park, Venezuela, Brazil and Guyana.

It is known from the history of science that even V.I. Vernadsky assumed the existence of gas exchange between the Earth and space. Vernadsky assumed that the decay of some and the synthesis of other substances takes place in the earth's crust. In 1911, he delivered a report "On the Gas Exchange of the Earth's Crust" in St. Petersburg at the Second Mendeleev Congress. This is now considered scientific fact.

Much later, Irish, Canadian and Chinese geophysicists modeled the conditions that are characteristic of the bowels of the Earth and showed that water arose as a result of its synthesis in the bowels of the planet. The research materials were published in the journal Earth and Planetary Science Letters.

The dew we are accustomed to can only be found in the morning on the grass, but farmers are well aware that there is underground dew, as well as daytime dew, deposited inside the arable land. So Ovsinsky I.E. in his book " New system agriculture" tells about these phenomena. Confirmation of the synthesis of water in nature was the cases of the "ice tsunami", filmed on video in 2013 in Minnesota, USA and Canada. Snow was synthesized in the spring in May, and such cases are not isolated.

Photo of the ice tsunami 2013, Minnesota, USA.

Stunning Ice Spectacle On Minnesota Lake 2013 HQ

Scientists have established the fact that during its movement in space, the Earth loses part of the substance of the atmosphere. Nevertheless, the planet's atmosphere remains stable, which means that the lost matter is being restored. This is true for other substances that form our planet.

Such facts of the synthesis of substances was the recovery of oil in depleted wells. It turned out that 150% of the oil from the previously calculated reserves was produced in the long-discovered fields. And there were a lot of such places: the border of Georgia and Azerbaijan (two fields that have been producing oil for more than 100 years), the Carpathians, South America etc. Field " white tiger» in Vietnam, it produces oil from the strata of fundamental rocks, where oil should not be in principle.

In Russia, the Romashkinskoye oil field, discovered more than 70 years ago, is one of the ten super-giant fields according to the international classification. It was considered to be 80% depleted, but every year its reserves are replenished by 1.5-2 million tons. According to new calculations, oil can be produced until 2200 and this is not the limit.

At the Old Fields of Grozny, the first well was drilled at the end of the 19th century, and by the middle of the past 100 million tons of oil had been pumped out. Later, the field was considered depleted, and after 50 years, reserves began to recover.

Based on these facts, we can conclude that the synthesis of elements on the planet is not a miracle or an anomaly - it is a natural phenomenon. Water is synthesized under certain conditions and in certain areas of heterogeneity of our planet. The water cycle in nature undoubtedly exists, but it is more a process of transformation of matter, which is associated with the process of the emergence of our planet Earth. In science, they are trying once again to approach the explanation of these phenomena from the standpoint of the theory of the ether, which has long been banned and defamed by the "authorities" of orthodox science. But the aether theory is just a simplified special case a comprehensive theory developed by the Russian scientist Nikolai Levashov. The theory of the ether can be compared to a beam of light from a lamp or from the Sun. It obeys certain optical laws, but it is worth passing it through a prism (polarizing) and we see a more complex picture - no longer a white beam, but seven rainbow colors. And each color beam has its own individual quality indicators.

To understand why substances are synthesized on the planet, it is necessary to know how our planet was formed. We find the answer to these questions in the books of the Russian scientist Nikolai Viktorovich Levashov.

Our universe is formed by seven primary matters located in space, possessing specific properties and qualities. Merging with each other, primary matters form hybrid forms of matter. The substances of our planet are formed from them. In this case, a closed system of space-matter(s) is formed. Moreover, in this system, as space affects matter, so matter affects space, i.e. like any closed system, it tends at each point to a balanced equilibrium.

Merging of primary matters is possible only under certain conditions. Such a condition is a change in the dimension of space, its perturbation (change in the qualitative state).

The dimensionality of space is its qualitative state, heterogeneity is the quantization (separation) of space filled with certain primary matters or their hybrids in accordance with the properties and qualities of these primary matters. A change in dimensionality sufficient for the formation of hybrid forms (substance in large volumes) occurs during the explosion of a supernova. At the same time, concentric waves of perturbation of the dimensionality of space propagate from the epicenter of the explosion, which create zones of heterogeneity of space in which planets are formed. You can read more about the formation of planetary systems in chapter 2.5 "Inhomogeneous Universe".

When primary matter enters these zones, they begin to merge and form hybrid forms of matter, including physically dense matter. This process will continue until the entire zone of inhomogeneity is filled and a balance between space and matter is established. As a result of the matter synthesis process, gradual restoration (compensation) of dimensionality in the inhomogeneity zone to the level that was before the supernova explosion occurs.

As a result of the process of synthesis of a physically dense substance from a combination of primary matters (hybrids), six material spheres are formed in the zone of dimensionality heterogeneity, which are nested in each other. These spheres are created from hybrid forms of primary matter, differ in the number of primary matters that are part of each of these six spheres. This is the structure of our planet Earth. At the same time, all these spheres are quite material, but only physical-dense matter is accessible to our senses. But these spheres of various hybrids of primary matters are, as it were, "transparent" to each other and practically do not interact. This is approximately like light waves, sound and radio waves, which can be at the same time at the same point in space, but under normal conditions do not interact with each other and pass through each other without interference.

The physically dense sphere (1) of the Earth is a hybrid of 7 primary matters, the physically dense substance of this sphere has four states of aggregation - solid, liquid, gaseous and plasma. Different states of aggregation arise as a result of fluctuations in dimensionality by a small amount.

Each substance has its own level (range) of dimensionality, in which this substance is stable and distributed according to the difference in dimensionality from the center of formation of the planet. Heavy elements have a maximum, and light elements have a minimum dimension inside the heterogeneity zone.

Water is formed by the synthesis of light elements - oxygen and hydrogen and is a liquid crystal. The atmosphere is 20% oxygen. Hydrogen is the lightest among gases, but its amount in the atmosphere is negligible - 0.000055%. Nevertheless, it rains on our planet - water molecules from a gaseous state (vapor in the atmosphere) turn into a liquid one.

If fluctuations in dimensionality occurred at the level of the boundary of solid matter and the atmosphere, dew falls, if in the atmosphere at the level of cloudiness, the drop formation process acquires a chain character, it rains. The atmosphere is losing its substance. The heterogeneity of space remains uncompensated. After the completion of the formation of the planet, the forms of matter that created it continue their movement through our planetary heterogeneity without merging with each other. But when the appropriate conditions arise, the primary matters again form matter. Water in the form of steam in the atmosphere is restored.

Many scientists are inclined to the theory that hydrogen and other gases enter the atmosphere to a greater extent from the bowels of the Earth. This was suggested back in 1902 by E. Suess. He believed that water is associated with magma chambers, from where it is released into the upper parts of the earth's crust as part of gaseous products.

Conditions sufficient for the synthesis of complex molecules arise in the bowels of the planet, since the primary matter, passing through the planetary inhomogeneity, entrains light elements and synthesizes new ones, the synthesis of which is possible within the range of the entire inhomogeneity. The composition of magma does indeed include water in the form of steam, and magma also contains almost all the elements of the periodic table.

In an effort to take their level of dimensionality, the molecules of hydrogen and oxygen fall into zones of inhomogeneity, where water synthesis is possible. Steam, rising from the depths, reaches the boundaries of a solid surface, where, due to slight differences in the dimensionality, water molecules from a gaseous state pass into a liquid one. This is how rivers are formed. Here's another example: in North Africa, under the Sahara Desert, one of the grandest underground fresh water reservoirs is located, while talking about rain and other precipitation in this region of the planet is not possible. Where is the water from?

The boundaries of the stability ranges of matter are the levels of separation between the atmosphere, oceans and the solid surface of the planet. The stability boundary of the planet's crystal structure repeats the shape of heterogeneity, so the surface of the solid crust has depressions and protrusions.

distribution of matter on the planet. (

In nature, this is a continuous process of constant movement of water on Earth. It consists of water evaporation, condensation, precipitation and water transfer in rivers and other bodies of water, and then evaporation again. And so the whole cycle starts all over again.

Without the water cycle, there would be no snow in nature, rivers would eventually dry up, and all life on Earth would suffer from dehydration. And it is quite obvious that your one day may ask about any process related to water. So that such a question does not take you by surprise, play ahead of the curve and tell your child about the water cycle in nature and spend at home with a package that will easily show how it all works.

Such a visual will also be an excellent assistant to the student to consolidate his knowledge or just interesting and useful entertainment for kids who love with experiences. But before proceeding to the experiment, tell the child about each of the stages of the water cycle in nature, then it will be even easier to understand what is happening in the bag.

The water cycle in nature: a picture-hint for children

- incredible natural resource, which covers 70% of the Earth's surface and is necessary for the life of all living things. This is the only substance that exists in three physical states - gas (water vapor), liquid (water) and solid (snow, ice). Most other substances have only one natural state.

During the full cycle of the cycle in nature, the state of water is constantly changing, absorbing or releasing thermal energy. Thus, water in the cycle goes through four stages:

Evaporation- the process when water on the surface, when heated, turns into steam and escapes into the air. It occurs wherever there is water: on the surface of the ocean, rivers or lakes, when we or animals sweat, and when dew appears on plants. Warm water evaporates faster and you can check this by boiling water on the stove. But even when we don't see steam, evaporation still happens, but much more slowly.

Condensation. As the water vapor in the air rises and reaches the upper atmosphere, the cold temperature causes it to release heat and turn back into liquid. These tiny water droplets hang on dust particles in the air to form clouds.

Precipitation. Water droplets in clouds also collide and condense together, and then they become larger and heavier. If the rate of fall of water droplets exceeds the rate of ascending and they do not have time to evaporate, then they fall as precipitation in the form of rain, sleet, snow or hail.

Water transfer. In the form of precipitation, water again falls to the surface of the Earth. Some of the water flows down and ends up in the sea, lakes or rivers. The other one soaks into the ground and becomes groundwater that feeds plants or passes through the soil to reach the ocean. Another part of the water gets and is absorbed by animals. From here the water cycle begins again.

The water cycle in nature: psimple experiment in a package

Step-by-step instructions on how to conduct an experiment with children that will clearly show all the stages of the water cycle in nature. This the child can spend both at school and at home.

To conduct the "Water Cycle in Nature" experiment, you will need:

• zipper bag;
• colored markers;
• water;
• blue (optional);
• scotch.

Step-by-step instructions on how to conduct the experiment "The water cycle in nature"

1. Heat the water so that steam forms over it, but do not bring it to a boil.
2. Add blue dye to the water to make it "water from the ocean".
3. Pour into the bag and zip it up.
4. Hang the bag vertically on a window or door by sticking it with tape. The main thing is to fix it well.
5. As the water begins to evaporate, the child will see condensation form at the top of the bag.
6. After a while, water droplets will appear inside the bag. When they become very large and heavy, they will eventually slide down. This is the stage of returning water back to the sea.
7. If the water is still warm, or if the bag is exposed to the sun, the water cycle will continue.

The properties of water can affect our habitat, so the knowledge and experiments associated with it are very useful. Thanks to such a simple visual, the child will be able to see and understand how the water cycle occurs in nature using the example of a small bag of liquid.