Hello, today I was looking for info about the water cycle and I found this summary that is pretty good and I thought I’d put it in a post, it’s the first one I do so I hope it works for you. If you need any other info send an email that I have no problem in searching.
The water cycle (or hydrological cycle) is the circulation of the earth’s water: fresh water from lakes and rivers, salty seas and oceans, and the atmosphere. It comprises the process that collects, purifies and distributes the fixed supply of water to the earth’s surface, including some important steps:
Through evaporation, the water that is on the earth and in the oceans becomes water vapor.
Through condensation, water vapor becomes liquid droplets, which form clouds or fog.
In the process of precipitation, the water returns to the Earth in the form of dew, rain, hail or snow.
Through transpiration, water is absorbed by the roots of plants, passes through stems and other structures and is released through its leaves as water vapor.
Water moves from the earth to the sea, either from the earth to the ground where it is stored and from where it eventually returns to the surface or lakes, streams and oceans.
With the condensation of the water, the gravity causes the fall to the ground.
Gravity continues to operate by pushing the water through the soil (infiltration) and over it in the direction of the terrain slopes (runoff).
Gravity causes the water to reach oceans and depressions again. Frozen water trapped in icy regions of the earth either as snow or ice, constitutes reservoirs that can remain long periods of time. Lakes, lagoons, estuaries and marshes are temporary reservoirs. The oceans have salt water because of the presence of minerals, which can not be carried with water vapor. Thus, rain and snow contain relatively clean water, with the exception of the pollutants that water carries from the atmosphere.
In the water cycle energy is provided by the sun, which produces evaporation and, in addition, provides the energy for the climate systems that allow the movement of water vapor (clouds) from one place to another (otherwise always It would rain only on the oceans).
Organisms play a very important role in the water cycle, most of which contain significant amounts of water (up to 90% by weight). Animals and plants lose water from their bodies by evaporation. In plants the water taken by the roots moves to the leaves where it is lost by perspiration. In both plants and animals, the breakdown of carbohydrates (sugars) to produce energy (respiration) produces CO2 and water as waste products. Photosynthesis reverses this reaction, water and CO2 combine to form carbohydrates.