Top 10 water facts Selected as the most interesting among water related questions in Water quiz What sound can be heard when approaching an iceberg?A fizz. When a piece of iceberg ice melts, it makes a fizzing sound called "Bergie Seltzer". This sound is made when the water-ice interface reaches compressed air bubbles trapped in the ice. As this happens, each bubble bursts, making a 'popping' sound. The bubbles contain air trapped in snow layers very early in the history of the ice, that eventually got buried to a given depth (up to several kilometers) and pressurized as it transformed into firn then to glacial ice.Created by: globalquiz.orgice facts » Where is the saltiest lake in the world?In Antarctica. With a salinity level of over 40%, Don Juan Pond is the saltiest of the Antarctic lakes. This salinity allows the pond to remain liquid even at temperatures as low as −50 °C (−58 °F) due to the interference of salts with the bonding of water molecules. Don Juan Pond was discovered in 1961 by George H. Meyer.Created by: Tschukasalt facts » At what temperature does water boil at the top of Mt Everest?68°C (154.4°F). The boiling point of water depends on the pressure. On top of Mount Everest, the pressure is about 260 mbar (26.39 kPa) and the boiling point of water is 69 °C. (156.2 °F). In contrast, water can still remain liquid near deep hydrothermal vents, even if the temperature is very high.Created by: globalquiz.orgalpinism facts » What kind of ships have typically the longest lifespan?Great Lakes freighters. Since the freshwater lakes are less corrosive to ship than the salt water of the oceans, many of the Lakers remain in service for long periods and the fleet has a much higher average age than the ocean-going fleet. The St. Mary's Challenger, built in 1906, is currently the oldest boat on active duty on the Lakes.Created by: Shankar Kumarnavy facts » Which cats enojoy swimming?Tigers living in the southeast Asia are semi-aquatic. They spend much of their time in rivers and feed on fish. Young tigers like to play in the water, and adults often take a bath just to keep cool during hot days.Created by: simply the beastdangerous animals facts » 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 facts » 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 facts » 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: KYRTAPSgeology facts » How tall is Angel Falls, the world's tallest uninterrupted waterfall?979 m (3,212 ft). Angel Falls is over twice as tall as the Empire State Building. It is one of Venezuela's top tourist attractions, though a trip to the falls is a complicated affair, as the falls are located in an isolated jungle.Created by: globalquiz.orgVenezuela facts » How many atoms are there in a single particle of water?3. A water molecule contains one oxygen and two hydrogen atoms (hence the chemical formula H2O).Created by: Bob Stanleychemistry facts » Play water quiz and see all the questions.