GeotchaA geography quiz on a real globe

18 longest rivers flowing into the North Sea

18 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. 1Rhine1,233 km
2. 2Elbe1,094 km
3. 3Meuse950 km
4. 4Weser451 km
5. 5Ems371 km
6. 6Thames334 km
7. 7Trent298 km
8. 8River Great Ouse240 km
9. 9Eider188 km
10. 10Spey172 km
11. 11Tweed156 km
12. 12Dee154 km
13. 13Tees137 km
14. 14Tyne100 km
15. 15Wear96 km
16. 16Ouse90 km
17. 17Yser78 km
18. 18Forth47 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. Flowing into the North Sea: the rivers whose mouth Wikidata records as the North Sea or a sea, gulf or bay inside it, as the IHO's sea areas nest (the North Sea lies in the Atlantic, the Adriatic in the Mediterranean) (P403); their tributaries are left out.

On the map

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