Statistics for Rivers of the world: Part I-South America

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Hint	Answer	% Correct
Longest River	Amazon River	100%
Second longest river	Parana River	82%
Longest Tributary of #4	Paraguay River	67%
Longest river in Venezuela not part of the Amazon System	Orinoco River	65%
River between Argentina and Uruguay	Uruguay River	61%
Above is a tributary of what longer river	Tocantins River	53%
Longest Amazon Tributary	Madeira River	51%
Longest river in Brazil not part of the Amazon or Parana systems	Sao Francisco River	51%
Longest river in Colombia not part of the Amazon System	Magdalena River	41%
Second longest Amazon Tributary	Purus River	41%
Longest River in Argentina not part of the Parana River system	Rio Negro	37%
Third longest Amazon tributary	Japura River	35%
River between Mato Grosso and Para and Tocantins	Araguaia River	29%
	Ucayali River	27%
Longest River in Guyana	Essequibo River	22%
Two rivers that join to form the above	Maranon River	22%
River that joins the Amazon east of Fonte Boa	Jurua River	18%
	Beni River	16%
	Grande River	16%
River between Bolivia and Rhondonia	Guapore River	16%
Two rivers that join to form the above	Mamore River	14%
Longest river in Chile	Loa River	12%
Longest tributary of the above	Madre de Dios River	10%
Longest river in Ecuador	Napo River	10%
Two rivers that join to form the above	Paranaiba River	10%
Longest tributary of the above	Acre River	8%
Longest river in Suriname	Courantyne River	6%
Longeest river in French Guyana	Litani River	4%