The most difficult Baltic Sea riddles A list of Baltic Sea related questions that are most often answered incorrectly Geography quiz When did the course of the Baltic Sea coastline finally form?About 2,000 years ago. The Baltic Sea is one of the largest brackish inland seas by area, and occupies a basin formed by glacial erosion during the last few ice ages. It is about 1,600 km (990 mi) long, an average of 193 km (120 mi) wide, and an average of 55 metres (180 ft) deep. The maximum depth is 459 m (1,506 ft).The current course of the shoreline was formed about 2 thousand years ago. very hard 23% about 5,000 years agoabout 5,000 years ago13%about 10,000 years agoabout 10,000 years ago38%about 3,500 years agoabout 3,500 years ago24%about 2,000 years agoabout 2,000 years ago23%Created by: Tschuka . Statistics based on 316 answers in 2 languages »geography of Europe riddles » What is the largest affluent of the Baltic Sea in terms of mean discharge?Neva. Vistula is the longest of Baltic Sea affluents, but its mean discharge of 1080 m3/s is less than half of Neva (2500 m3/s). Other major Baltic Sea affluents are Daugawa nad Neman (both 678 m3/s).very hard 27% VistulaVistula44%NevaNeva27%DaugavaDaugava10%NemanNeman18%Created by: globalquiz.org. Statistics based on 4023 answers in 2 languages »geography of Russia riddles » Where is the Gulf of Bothnia?Between Sweden and Finland. A number of rivers from both countries flow into the gulf. As a result, a salinity gradient exists from north to south. In the south the water is the normal brackish water of the Baltic Sea, but in the north, the salinity is so low, that one can no longer taste the salt in the water and many freshwater fish thrive in it.very hard 36% between Finland and Russiabetween Finland and Russia32%between Sweden and Finlandbetween Sweden and Finland36%between Sweden and Denmarkbetween Sweden and Denmark16%between Finland and Estoniabetween Finland and Estonia15%Created by: globalquiz.org. Statistics based on 12336 answers in 2 languages »Finland riddles » How do Finns call the Baltic Sea?East Sea. In all Germanic languages except English the Baltic Sea is called "East Sea" - this includes German (Ostsee), Dutch (Oostzee) and all Scandinavian languages. The name has been used since the Viking age, and was also adpoted (through Swedish) into Finnish language, disregarding the geography (the sea is west of Finland).hard 48% West SeaWest Sea13%East SeaEast Sea48%North SeaNorth Sea8%South SeaSouth Sea29%Created by: Gizem İsmailoğlu. Statistics based on 19567 answers in 4 languages »geographical names riddles » Which river flows through Riga?Daugava is the second largest river (by river discharge) flowing into the Baltic Sea, after Neva.hard 48% VistulaVistula2%DaugavaDaugava48%VolgaVolga22%NevaNeva26%Created by: globalquiz.org. Statistics based on 6127 answers in 9 languages »Northern Europe riddles » Which of these languages does not belong to Balto-Slavic languages group?Estonian belongs to the Finnic branch of the Uralic language family. Estonian and Finnish are not Indo-European languages, hence Latvian is more closely related to English, than to Estonian.hard 49% LithuanianLithuanian6%LatvianLatvian6%EstonianEstonian49%Old PrussianOld Prussian37%Created by: globalquiz.org. Statistics based on 6410 answers in 2 languages »Scandinavia riddles » Which river flows through Sankt Petersburg?Neva is the third largest river in Europe in terms of average discharge, after the Volga and the Danube. It is only 74 kilometers (46 mi) long, and connects Lake Ladoga with the Baltic Sea.hard 55% NevaNeva55%LenaLena14%VolgaVolga23%DaugavaDaugava5%Created by: globalquiz.org. Statistics based on 6569 answers in 9 languages »Russia riddles » On which island did Nazis build this colossal tourist complex?Rügen. Prora was built by Nazi Germany as a beach resort on the island of Rügen, Germany, which is known for its colossal Nazi-planned tourist structures. The enormous building complex is 4.5 kilometres in length, and was built between 1936 and 1939.average 67% GottlandGottland7%RügenRügen67%FurillenFurillen16%CreteCrete8%Created by: Ninjai. Statistics based on 1481 answers in 2 languages »WW2 riddles » Play geography quiz and see all the questions.