10 most difficult volcanoes riddles A list of volcanoes related questions that are most often answered incorrectly Geography quiz Which volcano is known as being one of the most active, but at the same one of the least violent in the world?Kīlauea, Hawaii. Kīlauea is one of the most active volcanoes on the planet and an invaluable resource for volcanologists who are able to study it up close due to its exclusively non-violent effusive activity. Kīlauea lacks a distinct peak and lies close to Mauna Loa.very hard 36% Mt Etna, ItalyMt Etna, Italy22%Kīlauea, HawaiiKīlauea, Hawaii36%Eyjafjallajökull, IcelandEyjafjallajökull, Iceland33%Mt Pinatubo, PhilippinesMt Pinatubo, Philippines7%Created by: globalquiz.org. Statistics based on 6941 answers in 4 languages »Hawaii riddles » What is the typical source of pressure buildup inside a volcano?Degassing of magma. The whole process begins when hot magma is lifted by convection to the magma chamber. As the pressure in the chamber is lower than deep in Earth's crust, the gas starts to release. Since degassed magma has lower density, it may then sink and be replaced with new one. This process may build up huge pressure of gases, eventually causing explosion.hard 42% centrifugal force of Earth rotationcentrifugal force of Earth rotation19%magma convectionmagma convection35%boiling of rainwaterboiling of rainwater3%degassing of magmadegassing of magma42%Created by: Sumit Tamang. Statistics based on 8048 answers in 2 languages »natural disasters riddles » How many active volcanoes are there in Italy? (That have erupted during the last 100 years)3. These are Vesuvius, Etna and Stromboli. There are several other volcanoes considered dormant, of which 7 erupted in historic times (Vulcano 1890, Isola Ferdinandea 1831, Campi Flegrei 1528, Ischia 1302, Larderello 1282, Lipari 729, Vulsini 104BC)hard 43% 1120%2229%3343%NoneNone6%Created by: globalquiz.org. Statistics based on 13974 answers in 2 languages »geography of Italy riddles » Which island is known as "Lighthouse of the Mediterranean"?Stromboli. Mt Stromboli has been in almost one continuous eruption for the past 2000 years, which is the longest known in the world. The volcano explodes at intervals ranging from minutes to hours. This is known as Strombolian eruption type, also observed at other volcanoes worldwide.hard 45% CyprusCyprus11%SicilySicily25%StromboliStromboli45%RhodesRhodes18%Created by: globalquiz.org. Statistics based on 13905 answers in 2 languages »Mediterranean riddles » This double peaked volcano is the highest mountain of a certain country. Which one?Russia. Two characteristic peaks of Mt Elbrus have two volcano craters. The eastern peak has an enormous crater 250m in diameter. hard 47% IndonesiaIndonesia18%RussiaRussia47%ArgentinaArgentina21%AustriaAustria12%Created by: MarcusX. Statistics based on 15015 answers in 2 languages »alpinism riddles » Where was this photo of Etna eruption taken from?International Space Station. Mount Etna is a stratovolcano currently standing 3,329 m (10,922 ft) high. The ash plume rises another few kilometers high, so the photo couldn't have been taken from a plane at such steep angle. It was taken from the ISS, orbiting over 330 km above Earth's surface.hard 49% passenger aircraftpassenger aircraft21%hot air balloonhot air balloon23%International Space StationInternational Space Station49%the Moonthe Moon5%Created by: Kasia. Statistics based on 5295 answers in 2 languages »photos riddles » Which continent has the least active volcanoes?Australia. There are no active volcanoes on the Australian mainland that have erupted since European settlement, however some volcanoes in Victoria and South Australia are likely to have been active and witnessed by Aboriginal people several thousand years ago.average 61% EuropeEurope17%North AmericaNorth America7%AfricaAfrica14%AustraliaAustralia61%Created by: globalquiz.org. Statistics based on 15977 answers in 2 languages »geography of Australia riddles » Olympus Mons is the largest known volcano. Where is it?On Mars. Olympus Mons (Latin for Mount Olympus) is a large shield volcano on the planet Mars, having a height of nearly 22 km (14 mi). Being a shield volcano, it has a very low profile. The average slope on the volcano's flanks is only 5°. Because of that, an observer standing on the Martian surface would be unable to view the entire profile of the volcano, even from a great distance.average 63% in Australiain Australia5%in Indonesiain Indonesia12%in Antarcticain Antarctica18%on Marson Mars63%Created by: Trương Ngọc Hùng. Statistics based on 11553 answers in 4 languages »Solar System riddles » This is Hella, a volcano in Iceland. How was it called by Europeans in the Middle Ages?Gateway to Hell. After the eruption of 1104 stories, probably spread deliberately through Europe by Cistercian monks, told that Hekla was the gateway to Hell. The belief that Hekla was the gate to Hell persisted until the 1800s. Apparently, Jules Verne was inspired by the story. In his "Journey to the Center of the Earth", a path downwards is found inside other Icelandic volcano, Snæfellsjökull.average 64% Gateway to HeavenGateway to Heaven14%Gateway to HellGateway to Hell64%Gateway to IcelandGateway to Iceland4%Gateway to the NorthGateway to the North15%Created by: globalquiz.org. Statistics based on 9758 answers in 2 languages »geography of Scandinavia riddles » In which major European city there is a volcano that may soon erupt?In Naples. Lying mostly underwater, Campi Flegrei comprises 24 craters. It is one of the largest volcanoes in the world, capable of producing VEI 7 (super-colossal) eruptions. Its most recent eruption of 1538 created a new hill, Monte Nuovo.easy 70% in Portoin Porto3%in Heraklionin Heraklion9%in Naplesin Naples70%in Palermoin Palermo16%Created by: Hitter smasher. Statistics based on 23361 answers in 4 languages »disasters riddles » Play geography quiz and see all the questions.