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The Earth is considered as a physical system, so that all its phenomena are investigated and decomposed into physical and chemical aspects to arrive at a better understanding of its structure, its exact composition and its evolution throughout geological history.
The sciences or branches that are dedicated to the description and understanding of our planet, study all their processes in order to understand them better and determine their evolution.
The human being, since its appearance, has the need to understand the environmental phenomena that surround it. The need to perform extractions of metallic minerals for the realization of utensils (tools, machines, weapons ...), are indispensable in the development of civilizations.
On the other hand, the observations of atmospheric phenomena and the knowledge of their variations are of great importance in the beginnings of human life; and the eagerness to find and take advantage of the water resources provided by nature (rivers and groundwater), allows the establishment of civilizations in previously inhospitable places.
These three aspects, geological, atmospheric, hydrological and biological are the aspects that currently group all the disciplines that constitute the Earth sciences. Such aspects are studied respectively by Geology, Meteorology, Hydrology and Biology.
This chapter contains articles that talk about our planet, the Earth, and its satellite, the Moon.
In this chapter:What will be the end of the Earth ?: What will happen to the Earth when the Sun goes out? For this to happen, there are still 5,000 million years left ... Read pageAir formation: The opinion of astronomers is that the planets were born from whirlpools of gas and dust, constituted in ... Read pageWhat is the greenhouse effect ?: When we say that an object is "transparent" because we can see through it, we don't want to… Read page Star losses and rains: Perseids are a meteor shower visible in August from the northern hemisphere… Read page Geology and the Universe: Geological Sciences, Geology or Earth Sciences -as the Anglo-Saxons call it-, is the… Read page The dance of the continents: The interior of our planet is at enormous temperatures that generate more layers… Read page Pangea, the whole earth: Through the study of the reliefs in the current emergent lands, their age and the type of fossils ... Read pageThe visible face of the moon: Why does the Moon always show us re the same face ... Read pageEclipses of Sun and Moon: When a celestial body interposes between two others blocking its light, an eclipse occurs ... Read pageLunar seas: Did you know that there are seas not only on Earth, but also on the Moon ? And did you know that the seas of the terrestrial satellite… Read page Water on the Moon: Is there water on the Moon? It is nothing new that scientists have been considering the existence of ice water in… Read Page