GeotchaA geography quiz on a real globe

25 longest rivers in the West Siberian Plain

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. 1Irtysh4,248 km
  2. 2Nizhnyaya Tunguska2,989 km
  3. 3Ishim2,450 km
  4. 4Podkamennaya Tunguska1,865 km
  5. 5Chulym1,799 km
  6. 6Angara1,779 km
  7. 7Ket1,621 km
  8. 8Taz1,401 km
  9. 9Demyanka1,160 km
  10. 10Konda1,097 km
  11. 11Vasyugan1,082 km
  12. 12Bolshoy Yugan1,063 km
  13. 13Vakh964 km
  14. 14Tym950 km
  15. 15Kureyka888 km
  16. 16Tom827 km
  17. 17Sym694 km
  18. 18Kazym659 km
  19. 19Bolshaya Kheta646 km
  20. 20Turukhan639 km
  21. 21Nizhnyaya Baikha608 km
  22. 22Bolshoy Salym583 km
  23. 23Tromyogan581 km
  24. 24Tartas566 km
  25. 25Vagay555 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. The West Siberian Plain: what lies inside the plain’s outline, by each item’s point (a lake’s centre, a river’s mouth, a summit).

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