Water questions This is a list of recently added questions about water. Play water quiz and see all the questions. How is the soilless cultivation of plants called?Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite or gravel.Created by: Paweł Kołodziejczykcrops riddles »hard 49% hydrologyhydrology830hydroculturehydroculture1815hydroponicshydroponics4392hydrofarminghydrofarming1754 What part of the Earth's surface is dry land?29,2%. It is currenlty 29.2% - but it may decrease in the near future due to global warming and sea level rise.Created by: Krzysztof MoskalEarth riddles »hard 56% 29,2%29,2%214133,6%33,6%99438,4%38,4%41242,1%42,1%230 In which country is the Plitvice Lakes National Park located?In Croatia. Plitvice Lakes National Park is a national park in Croatia. Since 1979 it is on a list of the UNESCO World Heritage list. The park consists of the system of 16 lakes connected by numerous waterfalls and cascades.Created by: Paweł Kołodziejczyklakes riddles »hard 59% In the Czech RepublicIn the Czech Republic926In SlovakiaIn Slovakia1388In CroatiaIn Croatia3981In HungaryIn Hungary390 How many players of one team are there in a pool during the water polo game?7. A team consists of 6 field players and one goalkeeper in the water at any one time. Created by: Paweł Kołodziejczyknumbers riddles »hard 52% 551416772173993781111167 What is the name of the line on the map which joins points of equal rainfall?Isyhyet joins points where the amount of precipitation (rainfall, snow etc) is the same. Created by: Paweł Kołodziejczykmeteorology riddles »hard 44% IsohigraIsohigra520IsohydraIsohydra2237IydroizohipsaIydroizohipsa627IsyhyetIsyhyet2724 Which place in the world has the highest average annual precipitation? Southern foothills of the Himalayas. Mawsynram village in northeast India has the highest average annual total percipitation in the world (11,872 mm = 467.4 in). There, hot and moist air from south of India approaches Himalayas. It rises up, cools and loses water.Created by: KYRTAPSgeography riddles »very hard 30% North-west ScotlandNorth-west Scotland452Central Amazon BasinCentral Amazon Basin2294Tuvalu IslandsTuvalu Islands369Southern foothills of the HimalayasSouthern foothills of the Himalayas1394 Which Greek letter is used to describe a type of river mouth?Delta looks like Greek letter Δ. It is formed when deposition of sediment is more intensive than sea erosion.Created by: KYRTAPSgeology riddles »very easy 87% sigmasigma786alphaalpha514deltadelta11446gammagamma323 How old is Baltic Sea?12 000 years old. Baltic Sea is one of the youngest seas in the world. It was formed after the last ice age as ice-lake, which later turned into a sea.Created by: KYRTAPSseas riddles »hard 40% 1200 years old1200 years old49112 000 years old12 000 years old3691120 000 years old120 000 years old292712 000 000 years old12 000 000 years old1981 What does the color range represent in this picture?Water salinity. Launched June 10, 2011, Aquarius is NASA’s first satellite instrument specifically designed to study the salt content of ocean surface waters. The complete first year dataset of NASA's Aquarius instrument reveals seasonal changes in the Amazon River's plume. Depending on the prevailing currents, the river's freshwater outflow heads east toward Africa or bends up north to the Caribbean.Created by: globalquiz.orgsatellite photography riddles »very hard 38% water temperaturewater temperature3364sea currents speedsea currents speed1288water salinitywater salinity3829sea depthsea depth1368 What is the only physical difference between heavy water and pure water?Heavy water has greater density. Heavy water contains deuterium instead of common hydrogen-1. In its pure form it has a density about 11% greater than water, but otherwise, it is physically and chemically similar. It is not radioactive. Because of greater density and stronger hydrogen-oxygen bonds, its behavior is slightly different in some biochemical reactions. It may be toxic, but only when a large fraction of water (> 50%) in higher organisms is replaced by heavy water.Created by: globalquiz.orgnuclear power riddles »average 64% heavy water has greater densityheavy water has greater density10396heavy water is radioactiveheavy water is radioactive2198heavy water is not translucentheavy water is not translucent1443heavy water conducts electricityheavy water conducts electricity2070 Play water quiz and see all the questions.