GeotchaA geography quiz on a real globe

25 longest rivers in northern Brazil

25 rivers, each one drawn on a satellite globe. Name it when it lights up, find it when you are given its name, or type every one you can remember in Name all.

Free to play, with no account needed. What you miss comes back for review until it sticks.

The rivers

  1. 1Amazon6,400 km
  2. 2Juruá3,100 km
  3. 3Purus2,960 km
  4. 4Japurá2,820 km
  5. 5Tocantins2,450 km
  6. 6Rio Negro2,250 km
  7. 7Mamoré1,930 km
  8. 8Tapajós1,930 km
  9. 9Araguaia1,910 km
  10. 10Xingu1,640 km
  11. 11Putumayo1,610 km
  12. 12Madeira1,450 km
  13. 13Apaporís river1,370 km
  14. 14Guaporé1,210 km
  15. 15Jutai1,200 km
  16. 16Iriri1,100 km
  17. 17Javary1,056 km
  18. 18Vaupés1,050 km
  19. 19Jari1,000 km
  20. 20Juruena960 km
  21. 21Aripuanã870 km
  22. 22Tapauá790 km
  23. 23Rio das Mortes780 km
  24. 24Trombetas760 km
  25. 25Gurupí720 km

Length in km as Wikidata records it (P2043, the best-ranked figure). Each named river counts on its own: the river that carries the name, from its source to its mouth. Headstreams and tributaries with names of their own are rivers of their own, so the Missouri and the Mississippi are two rivers here, as are the Irtysh and the Ob (the Longest River Systems set measures such chains as one system, from the most distant source). A named section of a river is that river: the Solimões, as the Amazon’s upper course is called in Brazil, is the Amazon. Where the recorded length runs from a differently named headwater (the Congo’s from the Lualaba’s source), the course is drawn on up that headwater. Rivers under 200 km are in only when they are well known (30 or more Wikipedia editions), and a river whose mapped course covers under half its recorded length is left out. Northern Brazil: the seven states of the North region, Acre to Tocantins. Places are by geography: what lies in a dependency counts for its own region (Puerto Rico’s islands are the Caribbean’s, Réunion’s Africa’s), and Hawaii is in Polynesia.

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