The most difficult ice riddles A list of ice related questions that are most often answered incorrectly Technology quiz On which of the following lakes are icebreakers most extensively used?Lake Superior. The Great Lakes are important shipping route, mainly for bulk goods like iron ore or coal. Several icebreakers are busy each winter to keep the route open.very hard 33% Lake BailkalLake Bailkal23%Lake SuperiorLake Superior33%Great Bear LakeGreat Bear Lake24%Lake OnegaLake Onega18%Created by: globalquiz.org. Statistics based on 5238 answers in 2 languages »lakes riddles » 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.very hard 35% a cracking noisea cracking noise46%a fizza fizz35%a roara roar7%a whispera whisper10%Created by: globalquiz.org. Statistics based on 4827 answers in 4 languages »Antarctic riddles » This is Amundsen–Scott South Pole Station. Why is it elevated?To avoid being buried in snow. All structures at the South Pole cause wind-blown snow to build up in the surrounding area (about four feet of snow per year). The station building has sloping lower portion of wall, which causes the snow to be scoured away.very hard 39% for earthquake safetyfor earthquake safety7%to reduce heat lossto reduce heat loss34%to avoid heating the groundto avoid heating the ground18%to avoid being buried in snowto avoid being buried in snow39%Created by: Debbie Fox. Statistics based on 2738 answers in 2 languages »technology riddles » Which water phase is the most dense?Liquid water. Ice frozen at atmospheric pressure is approximately 8.3% less dense than liquid water. Thus, ice floats on liquid water.hard 48% liquid waterliquid water48%water icewater ice35%water vaporwater vapor5%all have the same densityall have the same density11%Created by: Kasia. Statistics based on 13711 answers in 2 languages »water riddles » What is dry ice?Solidified CO2. Dry ice is used in refrigeration. It has an interesting property: it maintains a constant temperature of -78.5C in a warmer environment. This is because dry ice does not melt and sublimes directly into the gaseous form.very easy 92% glacierglacier3%solidified CO2solidified CO292%legendary alchemical substancelegendary alchemical substance2%meringue dessertmeringue dessert1%Created by: Niezgodna. Statistics based on 9082 answers in 2 languages »physics riddles » Play technology quiz and see all the questions.