The air that surrounds the Earth is known as the atmosphere. The gas layer that covers the planet is attracted by the force of gravity and the effect of low temperatures.
The Earth’s atmosphere was not always the same, but its formation is the result of a process of millions of years. Initially it was formed by hydrogen and helium .
In a subsequent phase, the planet was bombarded by a large amount of meteorites that ended in intense tectonic and volcanic activity. The gases released in the previous phase created a secondary atmosphere with carbon dioxide, nitrogen and sulfur gases. Finally, it was nature itself that changed the structure of the atmosphere.
What is the Earth’s atmosphere made of?
Its chemical structure is as follows: 78% nitrogen, 21% oxygen and 1% argon, carbon dioxide, water vapor, ozone and solid particles. All these elements are the basis of life on our planet.
On the one hand, the oxygen in the atmosphere is what allows plants and animals to transform their food into energy , on the other hand, carbon dioxide is used by plants to produce food, on which animals depend. Although this composition is stable, it is necessary to remember that changes in the atmosphere occur because of human intervention.
The atmosphere is divided into the following parts:
1) troposphere: where the temperature drops progressively and where most meteorological phenomena occur;
2) stratosphere: where the temperature is constant up to 50 km, the gases form layers and in it is the ozone layer that protects us from the Sun’s ultraviolet rays;
3) mesosphere: where the temperature increases abruptly and then drops to -75 degrees centigrade;
4) thermosphere or ionosphere: it is located between 80 and 500 km, reaching temperatures above 1500 degrees centigrade;
5) exosphere: located from 500 km onwards, it constitutes the part of the atmosphere that comes into contact with the external space, considering that there are no gases and therefore the air has no properties or temperature changes.
Human relationships also generate a kind of atmosphere
The type of human relationships generates a certain environment, also known as an atmosphere. There are as many social atmospheres as there are human contexts. There are pleasant and peaceful atmospheres, tension, violence , hatred or partying.
In literature , writers try to create an atmosphere for the reader to experience events with more intensity. When a person is disturbed in a place for any reason, he is likely to hear that there is no good atmosphere in that place.