GeotchaA geography quiz on a real globe

25 longest rivers in the northern hemisphere

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. 1Nile6,650 km
2. 2Amazon6,400 km
3. 3Yangtze6,300 km
4. 4Yellow River5,464 km
5. 5Mekong4,350 km
6. 6Lena4,294 km
7. 7Irtysh4,248 km
8. 8Niger4,180 km
9. 9Mississippi3,766 km
10. 10Missouri3,726 km
11. 11Ob3,650 km
12. 12Volga3,530 km
13. 13Yenisei3,487 km
14. 14Yukon3,190 km
15. 15Indus3,180 km
16. 16Rio Grande3,051 km
17. 17Nizhnyaya Tunguska2,989 km
18. 18Brahmaputra2,900 km
19. 19Danube2,850 km
20. 20Amur2,824 km
21. 21Salween2,815 km
22. 22Euphrates2,800 km
23. 23Vilyuy2,650 km
24. 24Amu Darya2,620 km
25. 25Ganges2,525 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 northern hemisphere: north of the equator. 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.

On the map

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