GeotchaA geography quiz on a real globe

8 longest rivers of the Oder basin

8 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. 1Oder854 km
  2. 2Warta808 km
  3. 3Noteć388 km
  4. 4Bóbr272 km
  5. 5Lusatian Nysa254 km
  6. 6Prosna216 km
  7. 7Nysa Kłodzka195 km
  8. 8Olza99 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. The Oder basin: the Oder and every river here that flows into it, directly or through other rivers and lakes, following where Wikidata says each river flows (P403) downstream.

On the map

Map of 8 longest rivers of the Oder basin, 8 rivers: each one marked on the globe

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