Amazon Geography Teaser #6 – Answer

Question: Which do you believe is the longest river in the world?

Answer Choices: A) Nile River B) Yangtze River C) Mississippi River D) Amazon River

Correct Answer: D) the Amazon River

Summary: Approximations of the length of the Amazon River usually fall between 3,900 miles and 4,100 miles. However, a recent study by Brazilian researchers has proposed a new source for the Amazon River on Mount Mismi in southern Peru which would make the Amazon River the longest river in the world at 4,250 miles. The Nile would be the next longest and is believed to be 4,160 miles long. The new proposed length could be contested and it is likely that there are many scientists who won’t agree but for the time being the Amazon is believed to be the longest river in the world. In addition to this length, about 1,100 tributaries of varying length and volume merge with the Amazon River at different locales. These rivers provide freshwater, food, and transportation routes for the many inhabitants of the region, both human and animal. One of the most astonishing features of the Amazon River system is the “Meeting of Waters” located where the dark Rio Negro meets the silty Amazon River. Overall, the rivers that flow through the Amazon Basin account for almost one-fifth of all free-flowing fresh water on earth. See the online source listed below for the whole article and maps showing the proposed new source.

A portion of the Kayapo River, an Amazon River tributary.

Source: Monga Bay; NASA maps newly proposed source of the Amazon River; July 3, 2007;


One response to “Amazon Geography Teaser #6 – Answer

  1. Pingback: Amazon Geography Teaser #6 – What is the longest river in the world? | Center for Amazon Community Ecology

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