Subglacial volcano - Quiz
Subglacial volcano
  • 1. What is another name for a subglacial volcano?
A) Supervolcano
B) Stratovolcano
C) Glaciovolcano
D) Submarine volcano
  • 2. Where are subglacial volcanoes most common today?
A) Iceland and Antarctica
B) Greenland and Norway
C) Canada and Russia
D) Chile and New Zealand
  • 3. What forms when lava is rapidly cooled by water during a subglacial eruption?
A) Basalt columns
B) Pillow lava
C) Pumice stone
D) Obsidian glass
  • 4. What geological features form when pillow lavas break off and roll down slopes?
A) Granite intrusions
B) Pillow breccia, tuff breccia, and hyaloclastite
C) Sedimentary sandstone
D) Limestone deposits
  • 5. Which specific Icelandic volcano erupted in 1996, causing a massive flood?
A) Katla
B) Eyjafjallajökull
C) Hekla
D) Grímsvötn
  • 6. What is a characteristic physical shape of a subglacial volcano?
A) Deep inverted craters
B) Perfectly spherical
C) Long narrow ridges
D) Flattened top and steep sides
  • 7. Who coined the term 'tuya' in 1947?
A) Bill Mathews
B) David Vaughan
C) Jack Farmer
D) Hugh Corr
  • 8. What is another name for a tuya used in Iceland?
A) Fire ridge
B) Ice peak
C) Glacier hill
D) Table mountain
  • 9. What is a 'jökulhlaup'?
A) A great flood of water
B) An ash cloud
C) An earthquake
D) A landslide
  • 10. How much ice was melted by the 1996 Grímsvötn eruption?
A) 10 km3
B) 3 km3
C) 1 km3
D) 0.5 km3
  • 11. Which scientists reported an Antarctic subglacial eruption from 2,200 years ago?
A) Meredith Payne and Jack Farmer
B) Viking and Mars Orbiter teams
C) Hugh Corr and David Vaughan
D) Bill Mathews and Sonia Esperanca
  • 12. Where was the volcanic ash from the 2,200-year-old Antarctic eruption deposited?
A) On the base of the Pine Island Glacier
B) In the middle of the Ross Sea
C) In deep subglacial tunnels
D) On the ice surface under the Hudson Mountains
  • 13. What chemical compounds are used to identify volcanic eruptions in ice cores?
A) Helium and Argon
B) NO3 and SO4
C) CO2 and Methane
D) Oxygen and Nitrogen
  • 14. Why do researchers study Mars for subglacial volcanoes?
A) To measure tectonic plate movement
B) To find potential habitats for microbes
C) To mine precious metals
D) To create new landing sites
  • 15. What keeps a subglacial volcano from collapsing during formation?
A) Pressure of surrounding ice and meltwater
B) Rapid cooling of the lava
C) The high viscosity of the lava
D) Solid granite foundations
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