Diving and Volcanoes: Final Exam von Vero Punkfish | 07.02.2022 | 0 Kommentare Welcome to your Diving and Volcanoes: Final Exam Name Email How did the Canary Islands form? They did fall off the African continental shelf After a large earthquake They were created by asteroids hitting the Earth Hot Spot Volcanism Which gas can react with water to form sulfuric acid? H2O CO CO2 SO2 Where did an underwater volcanic eruption close to the shore happen in 2011? La Palma El Hierro Java Bali Which gas is heavier than air and can accumulate in volcanic lakes? Helium Fluorin Nitrox CO2 Which ingredients do you find in lava? Silicates, natrium, iron A hard shell Blood, Sweat and Tears Scales When lava flows into the ocean…. ... water evaporates and acidic clouds can form ... it always forms a pyroclastic flow ... the sea level rises 2-3 meters ... Mammals come close to get warm in the spa-like conditions Identify this volcano Ash Cone Caldera Stratovolcano Shield volcano What shall I do if a volcano is giving signs of an imminent eruption while I am in the region? Go online and post about your experiences Listen to what the local disaster prevention and protection departments say Take a camera and get as close as possible Run as fast as you can How many active volcanoes are known on Earth? 37 150 20000 1900 Lahars... ... are mudslides caused by rain following a volcanic eruption ... are volcanic lakes ... are acid rainfalls ... are lava caves How do we call the molten or partially molten material driving volcanic activity? Earth’s core and crust Under the surface of the Earth lava, above the surface magma Moonstone Under the surface of the Earth magma, above the surface lava The VEI (Volcanic Explosivity Index) measures… ... the amount of tephra expelled, and the height of the eruption column .... the length of the lava flow ... the loudness of an eruption ... the amount of sulfur expelled What happens in the water around a volcanic eruption? Explosions potentially bring sediment to the surface The temperature raises locally All answers are correct The chemical composition of the water changes When lava solidifies at the outside but on the inside keeps flowing… It definitely reaches the ocean Once the flow stops, lava tunnels are left It is called Pillow Lava It forms basalt columns What can you expect a year after the eruption? Marine life has fully recovered and is even more abundant The water is still toxic There are dolphins everywhere Water temperature is still many degrees warmer than normal How are the hot thermal fountains that regularly erupt in Iceland called? Geysers Hot Spots Spa Volcano Fountain How can you describe a phreatomagmatic explosion? When magma and water mix, the rapid transfer of heat from the molten rock to the water can lead to fracturing, pressure rise, and explosion A phreatomagmatic explosion happens when the magma hits oil Whenever lava hits the water, the ocean explodes in a phreatomagmatic explosion All volcanic eruptions are phreatomagmatic explosions Where can you find Black and White Smokers? Only in the Baltic Sea In the deep sea along the middle oceanic ridges In the smoking area of your local airport Mainly in inland quarries Small tephra particles from 2-64 mm are called: Lapilli Lava Bombs Ash Restingolitas Which indicators are often measurable before an eruption? Light is shining from the place where the volcano will emerge High SO2 Values in the air, tropical storms and ash clouds Temperature rise, inflation and thunder Volcanic tremor, ground deformation and a change in radiant heat Kommentar absenden Antworten abbrechenDeine E-Mail-Adresse wird nicht veröffentlicht. Erforderliche Felder sind mit * markiertKommentar * Name * E-Mail * Website Meinen Namen, meine E-Mail-Adresse und meine Website in diesem Browser für die nächste Kommentierung speichern.