Globe - it would seem that could be easier?In the matter of natural causes, which served as the building blocks of our planet, gathered into one lump, and gradually formed a perfect sphere, and irregularities occurred later due to tectonic processes.But in the name of the shape of our planet lies a mistake.Even if you demolish all the hills and fill up all the lowlands, the Earth will not be a ball.Geographers and astronomers have come up with what to call a ball flattened at the poles - the geoid.In Greek it means "like the earth."That is, the Earth is shaped like the Earth.This here is oil oil.
compression at the poles is not only the earth, but also any celestial body of sufficient mass to rotate around its axis.However, the 'geoid' - the specific term, professional.In everyday life, the media and popular literature typically used another name - the globe.Given the fact that our planet is flattened at the poles, the circumference of the globe, drawn through the poles and the equator, will be different.The circle drawn through the poles, will be more than forty-seven thousand kilometers, and the circumference at the equator - forty thousand seventy-five kilometers.Globally, the difference in sixty-eight kilometers insignificant, but for some calculations it has a value.Have you ever wondered why most of the space centers located in the southern latitudes?That is precisely why we are.
Globe heterogeneous.Under the relatively thin crust lies the mantle - the viscous thick layer extending to a depth of almost three thousand kilometers.Here is located the core of which consists of two parts: the top - liquid, and the inside - solid.Temperatures at the center of the Earth reaches a value of six thousand degrees Celsius.Around that temperature prevails on the surface of the sun.
The Earth's surface is extremely heterogeneous.Moreover, two-thirds occupied by the oceans.So once and the remaining land is not always suitable for normal living.Although mankind has adapted to live even in harsh conditions of the Far North and the African deserts, no great civilization of the peoples living there could not create.For one simple reason: all the power they have left to fight the harsh environment and the maintenance of a minimum level of life.Where here to think about the expansion or creation of material, cultural or scientific values!
The world's population is spread over the surface of the planet very uneven.Even in ancient times most people lived in tropical, sub-tropical areas and in the southern part of the temperate zone.That the peoples living there were able to create civilization, admire and learn that we do not cease to this day.Some achievements of ancient and remained not understood by us, although their technical capacities do not go to any comparison with ours.
According to the "Gaia hypothesis", the globe is a superorganism, and everything that exists on its surface and in its depths, is the system of metabolism, respiration and thermoregulation.The birth and death of civilizations, earthquakes, floods and typhoons - part of a process called "life of the earth."Is this true or scientists as has happened more than once, great namudrili?Wait and see ...
