The water cycle song


Actually, taking into account (and in spite of) its humorous intention, two things must be recognized: one, that Pablo Carbonell (author of the lyrics) must have liked his Natural Science classes very much; another, that he took advantage of them, since there is only one phrase in which he is wrong.

The song considers that water, in order to evaporate, needs to reach a temperature of 100 ºC, which is false. It is necessary to distinguish the two processes by which a liquid can change to a vapor state: boiling and evaporation.

It is a process of change of state from liquid to gas, which occurs at a given temperature, and at any point of the liquid. In the case of water, if the pressure is 1 atmosphere, this temperature is 100 ºC.

An example of boiling is when water comes to a boil. If we look at it, vapor bubbles form anywhere, even in the center of the liquid, and not only at the base of the container we use to heat the water.

This process, on the other hand, occurs at any temperature and only on the surface of the liquid. This is what dries clothes, freshly mopped floors or sea water in salt pans, to extract the salt.

Transpiration water cycle

Today is a compilation of interesting links on hydrology and focused mainly on the water cycle, central theme on which revolve the didactic units dedicated to the hydrosphere that are worked in the classes of Nature Sciences and Biology and Geology of ESO.

These are links that, as I explained in the entries on the Solar System, are perfect to motivate students, but also serve to satisfy our scientific curiosity in a close, entertaining and fun way.

– And for those who have not been satisfied with the previous one, now I leave you a song in our language. In this case it is a song created by David Lopez and aimed at primary school students to, as the author himself says, work on the theme of the water cycle using the song to enhance creativity and imagination.

– In Chimpó we find an audio-arranged animation of the water cycle, complemented with a series of activities to be done by the kids themselves on their computers or on a digital whiteboard.

Water cycle drawing

To understand that life is a constant movement, a coming and going where letting oneself flow is natural, where stagnation produces an internal struggle that it is necessary to learn to let go in order to continue flowing.

To realize that in every ocean, every river, every snowflake, in every fruit and every tear, there is the same water that has circulated on the planet since its birth, and that the saliva in your mouth was once glacier water that became liquid and flowed.

To embrace the idea that there is water inside each one of us, that we are part of that cycle and we change states, shedding our skin from time to time to look at the experiences we have lived with new eyes, to be grateful for each learning and incorporate it as growth, ready to start the cycle again?

Like water (tangos)

The water cycle or hydrological cycle describes the journey of water from the oceans, its main reservoir, to the atmosphere, and then its accumulation in lakes, rivers and groundwater, returning again to the oceans. In the hydrological cycle, water passes through the three states: solid, liquid and gaseous.

Thermal energy from the sun is the force that allows water to evaporate and causes winds. The action of gravity causes water to return from the atmosphere to the ground through precipitation in the form of rain and snow, and to flow into rivers and oceans.

Evaporation of water is produced by the heat energy of the Sun. Evaporation takes place in oceans and on continents, with water changing from a liquid to a gaseous state. In this way, water becomes part of the atmosphere in the form of water vapor.

Part of the water that has precipitated is absorbed by the roots of plants and returned to the atmosphere by evaporation through their leaves by means of transpiration. Transpiration also occurs in animals.

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