The new methods of determination of length of the rivers based on pictures from space allowed to establish that the longest river in the world is not Nile as long time was considered, and Amazon which is also the deepest river on Earth.
Instruction
1. To determine river length not easy as it is necessary to know for sure the place where water flow begins and comes to an end, besides, there are certain difficulties with exact measurement of extent of the river between these points. Therefore length of many rivers on the earth is approximate and even often changes. So, long time in the world Nile proceeding by east part of Africa and flowing into the Mediterranean Sea was considered as the longest river. But new technologies allowed to determine more precisely length of other pretender to this place – Amazon which was nearly 150 kilometers longer.
2. To determine river length, it is important to choose correctly one of inflows which will be considered as its part and to be considered at measurement and also to define the main source from several and to choose the necessary sleeve in the delta. So, if to consider length of Amazon from its main source of Maranyon, 6992 kilometers turn out if to conduct measurements from Apachet's source, the river is stretched on 7 thousand kilometers, and the source of Ucayali is further away.
3. Amazon is fed by a set of inflows which length and width allow to confuse them with the river, but geographers know that only that inflow which is further everything from the mouth can be considered as a part of the river. Together with inflows the river forms a branched river system which covers distances in 25 thousand kilometers.
4. Amazon – not only the longest, but also the deepest river of the world. The area of its pool approaches the area of Australia, the smallest continent. The average annual drain makes about 7 thousand cubic kilometers, these are 15% of a drain of all rivers of the earth. During a flood Amazon covers with water huge spaces, forming swamps.
5. Amazon passes across the territory of Brazil, Peru, Colombia, Guyana, Venezuela and Bolivia and flows into the Atlantic Ocean where forms the largest delta in the world which area is more than hundred thousand square kilometers.