The consequences of earth rotation Are presented at the environmental, climatological, terrestrial and physical levels, forging the lives of each and every person living on planet earth.
It is noteworthy that the earth is in constant movement moving slowly with the rest of the solar system, being the movement of rotation one of the main movements that affect daily life.
The rotation movement was discovered in 1543 by the Polish astronomer Nicolaus Copernicus , As he explained in his great work The book of the revolutions of the celestial spheres.
In his book he explains the constant movement that the earth makes when it rotates on its own terrestrial axis from west to east.
In making this movement, the earth makes a complete turn around an ideal axis that passes through the poles, giving the impression that the sky revolves around the planet.
With the development of the heliocentric theory of Copernicus it was discovered that the earth revolves around the sun, the latter being the center of the universe.
As a result of this discovery, the two main terrestrial movements, namely rotation and translation, were made known.
Although the rotation, is the one in charge of determining the days and nights, it is the movement of translation, the one that realizes the earth when turning around the sun driven by the gravitation, the one in charge of determining the seasons of the year and its duration.
The rotation movement is vital for the existence and maintenance of life on the planet.
From stopping, anything not subject to the surface would fly at a speed of 1600 km per hour, creating strong winds of the magnitude of a nuclear explosion and producing tsunamis and lasting 365 days today, where six months would be extremely hot And the remaining six freezes.
Added to that, the magnetic fields would disappear, causing the surface to be exposed to the cosmic rays. That is why this movement can be considered as one of the most important that the earth does daily.
Main consequences of the earth rotation movement
Environmental
The succession of day and night
The earth takes 24 hours, namely a solar day, at every turn. It is thanks to this movement that there are the days and the nights, and when the rotation occurs from west to east it is possible to see the sun go out every day to the east and hide in the west.
As the earth has a spherical shape, its surface can not be reached by the sun rays at the same time, hence that while one area is illuminated, the opposite will be in the dark, and is the movement of rotation, the main responsible for it .
To this movement it is due that the half of the terrestrial globe is illuminated and the other half in the dark.
The succession of days and nights influences the human being establishing their periods of activity and rest depending on the area in which they are, namely east or west.
In the same way, the movement has an impact on the way of life of animals and the cycles of plants.
Determination of time and time differences
As the earth invests 24 hours in a turn on its axis moving from west to east, that is why in the eastern hemisphere dawn and last night before in the west, hence the time of a place depends on the different points Of the earth's surface by which the earth moves daily around its axis of rotation.
The rotation movement establishes the system of time zones, which consists of a division of the day into hours for the whole world based on the meridian zero or meridian of Greenwich.
The time zones or time zones are each of the 24 parts in which the earth is divided into meridians representing each time zone one hour of the day existing time differences between each spindle.
The terrestrial rotation allows to set a legal hour that contributes to adapt the schedule of the terrestrial globe helping people to organize themselves temporally especially when traveling or establishing personal and business relations with other countries.
Climatological
Variation of temperatures
Due to the consequence of the succession of day and night, the surface of the earth receives during the day a greater amount of solar radiation which generates that in the day the temperatures are higher than at night.
Terrestrial
Shape of the earth
In making a constant rotation, the earth generates a centrifugal force, which is responsible for the current structure of the earth, causing it to be slightly flattened in its north and south poles, and bulging in the middle, that is, in its Equatorial zone.
The rotational movement has succeeded in getting the earth to assume a crushed ellipsoid form of rotation, namely geoid.
Establishment of the cardinal points
Although the earth moves in relation to an imaginary terrestrial axis, it is precisely this axis that has created the imaginary arrangement in the plane of the known cardinal points: north, south, east and west.
Physical
Deviation of bodies in their free fall
Taking into consideration that objects are drawn by the force of gravity towards the center of the earth following a linear trajectory on falling, it is due to the earth's rotation that these objects apparently deviate eastward as they fall.
Deviation from wind and sea currents
The earth rotates with different speed in the different points of the surface, moving faster in the equator and much slower in the poles, wherefore the winds and the currents of the sea move from one latitude to another with a slight deviation towards the This resembling the movement of the cyclones.
The rotation movement generates the so-called"Coriolis effect", one of the most interesting phenomena occurring on earth.
This effect is the force at which all the fluids of the planet are subject, causing the masses of air and the oceans to deviate following predictable directions.
It is thanks to this effect that the rivers, oceans and winds, deviate to the right in the northern hemisphere and to the left in the southern hemisphere. A fundamental effect in the field of meteorology, aeronautics and aviation.
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