GeotchaA geography quiz on a real globe

22 longest rivers in Mongolia

22 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. 1Kherlen1,254 km
  2. 2Orkhon1,124 km
  3. 3Onon1,032 km
  4. 4Selenga1,024 km
  5. 5Zavkhan808 km
  6. 6Chikoy769 km
  7. 7Tes757 km
  8. 8Tuul704 km
  9. 9Little Yenisey680 km
  10. 10Khovd516 km
  11. 11Eg River475 km
  12. 12Ider452 km
  13. 13Delgermörön445 km
  14. 14Ongi437 km
  15. 15Khanui421 km
  16. 16Chuluut415 km
  17. 17Kharaa362 km
  18. 18Menza337 km
  19. 19Khalkhyn233 km
  20. 20Orshuun223 km
  21. 21Buyant218 km
  22. 22Chuya217 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.

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