Water is everywhere.This is the most common substance in nature. Most of the surface of the planet is occupied by seas and oceans; once, according to research by scientists, all land creatures came out on land.
Water is an amazing substance that has no analogues in nature. This is a substance that can change radically under the influence of ambient temperature.
Три состояния воды – лед, жидкость, газ – are called aggregate. At first glance, they are so different, and you might think that these are different materials. However, the snow that fell in the morning, the rain and clouds overhead are types of the same substance, but with different physical properties, and qualitatively different from each other.
The cycle is an opportunity given by nature
Three states of water are very important for our planet,as provide circulation. From the water surfaces of flowing rivers, seas and oceans, the liquid evaporates under the influence of sunlight, turns into a gaseous state, that is, vapor. It rises, turning into clouds. As the temperature is lower there, water droplets form (it turns into liquid again). From the clouds in the form of precipitation water falls to the ground, fills the rivers and the World Ocean.
Three aggregate states of water
When asked what water is, many people don’thesitate, they will answer - liquid! And they will be not quite right. Of course, we are accustomed to seeing water in nature mainly in a liquid state. However, it has three forms: liquid, solid (in the form of snow, ice, hail) and gaseous (vapor, clouds). Consider each option in more detail.
Liquid
Если сравнивать три состояния воды, то в жидком as it occurs more often with a fairly wide range of temperatures (from 0 to 100). In rivers, lakes, seas, oceans, it has a liquid substance. Dew, rain - precipitation is also in the form of a liquid. It has no form, taste and smell - all this is given to water by external influences. For example, the liquid takes the form of the dishes where we transferred it, takes over the smells and taste of additives (the same chlorine in the water supply). The liquid form of water is malleable, but has tremendous power. As the saying goes, water wears away a stone. And the liquid creates caves and destroys rocks, changing the planetary relief.
The value of fluid for humans
If you take all three states of water, then the liquid is of paramount importance for humans, and for all life on Earth. H2O широко используется в быту, для гигиены и sanitation: everywhere in demand water in liquid form. And each person per day needs to consume a fairly large amount of it (up to 2 liters) to replenish the water balance. Scientists have proven that a person can do without food for up to 40 days without food, but will not last a week without water. There comes a dehydration of the body at the cellular level, and then death.
Solid state
Any substance in nature consists of smallparticles in motion. When the temperature drops to a minus particle, water begins to move more slowly, and the liquid acquires a solid structure. Experimentally, you can check: a liquid (water) when it passes into a solid state not only turns into ice, but also changes in volume - expands (almost all objects with similar cooling, on the contrary, decrease in size).
If you freeze a glass bottle of water, thenwill burst. Ice on the waters and mighty icebergs, icicles on the roof, snow, hail - all this is a solid state of water. In nature and the economic life of people, ice is important in performing protective, sanitary, cooling functions. For example, the cooling of medical drugs or food.
But ice in nature can be spontaneous.disaster Hail and icing of wires, leading to cliffs, black ice, resulting in injuries, freezing of soil and snow avalanches - all these are consequences of the action of the solid state of water.
Gaseous state
Considering the 3 states of water, it is impossible not to givethe attention of her third incarnation - water vapor. Heating the water to 100 degrees, we get a transition to a state of gas. In the surrounding nature, this form is found in the form of various kinds of clouds, fogs, fumes with increasing humidity. And in the atmosphere of our planet are constantly tiny particles of water.
Gaseous state of water causedartificially, played a huge role in the development of scientific and technological progress in the life of all mankind. Steam machines in the last century were used quite widely (not to mention the 19th century) for generating energy, thanks to which the units could come into motion. For example, a locomotive and a car worked using steam energy.
Water value
All three states of water in nature for humanityhave tremendous value. And its transition from one type to another serves as a deep cleansing of the environment. As a result of the circulation, huge masses of liquid self-purify and benefit the person. In this regard, there is a clear need to protect water resources, to keep them clean and not to pollute water with human life products and industrial emissions.
