GeotchaA geography quiz on a real globe
25 longest tributaries of the Lena
25 tributaries, 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 tributaries
- 1Vilyuy2,650 km
- 2Aldan2,273 km
- 3Vitim1,837 km
- 4Olyokma1,436 km
- 5Linde804 km
- 6Nyuya798 km
- 7Muna715 km
- 8Kirenga669 km
- 9Sinyaya597 km
- 10Bol'shoy Patom570 km
- 11Molodo556 km
- 12Chuya (Lena)512 km
- 13Lungkha508 km
- 14Sitte431 km
- 15Motorchuna423 km
- 16Namana422 km
- 17Buotama418 km
- 18Undyulyung414 km
- 19Sobolokh-Mayan411 km
- 20Kuta408 km
- 21Menkere402 km
- 22Peleduy398 km
- 23Tuolba395 km
- 24Khoruongka377 km
- 25Chaya353 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. Rivers in Antarctica are left out unless the quiz includes Antarctica. Tributaries: the rivers that flow straight into the Lena, as Wikidata records where each river flows (P403) or which rivers flow into it (P974). A named stretch of the Lena (the Solimões of the Amazon) counts as the Lena; a river that reaches it through a lake or through a river too short for this pool is in its basin, not one of its tributaries. Their own tributaries are left out.
On the map
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