ThatQuiz Test Library Take this test now
Volcano - Quiz
Contributed by: Marsh
  • 1. What is the minimum volume of volcanic deposits required for a volcano to be classified as a supervolcano?
A) 500 cubic kilometres
B) 1,000 cubic kilometres
C) 2,000 cubic kilometres
D) 100 cubic kilometres
  • 2. What type of magma is typically found in the magma chamber of a supervolcano?
A) Gas-poor, iron-rich magma
B) Low-viscosity mafic magma
C) Water-rich, basaltic magma
D) Gas-rich, silicic magma
  • 3. What is the result of a catastrophic caldera-forming eruption?
A) Decrease in local vegetation
B) Creation of a new mountain range
C) Formation of a flood basalt field
D) Emptying of a large magma chamber
  • 4. How many supervolcano eruptions have been identified in the last million years?
A) Ten
B) Zero
C) Four
D) Sixty
  • 5. Why can supervolcano eruptions cause a cooling of global temperatures?
A) Release of sulfur and ash into the atmosphere
B) Increase in oceanic water volume
C) Destruction of forests worldwide
D) Absorption of sunlight by lava flows
  • 6. Which of the following is a known location of a supervolcano?
A) Yellowstone Caldera
B) Mount Fuji
C) Mount Saint Helens
D) Mount Kilimanjaro
  • 7. What makes identifying supervolcanoes in the geologic record difficult?
A) Their ash disappears after a few years
B) Concealment under vegetation and glacial deposits
C) They are always located in the deep ocean
D) They are too small to be noticed
  • 8. What is a caldera?
A) A collapsed crater
B) A submarine vent
C) A layer of cooled lava
D) A type of volcanic ash
  • 9. What are lakes inside a caldera called?
A) Silicic basins
B) Pillow lakes
C) Volcanogenic lakes
D) Submarine basins
  • 10. How many submarine volcanoes have had documented activity during the Holocene Epoch?
A) One million
B) 119
C) Sixty
D) Four
  • 11. What is the estimated number of geologically young submarine volcanoes on the ocean floor?
A) About 5,000
B) Under 100
C) More than one million
D) Exactly 119
  • 12. What prevents the explosive release of steam and gases in deep ocean basins?
A) Tremendous weight of the water
B) Low pressure at the sea floor
C) Presence of pillow lava
D) Rapid cooling of the water
  • 13. What is a common eruptive product of submarine volcanoes?
A) Ash flow tuffs
B) Basaltic flood plains
C) Silicic glass
D) Pillow lava
  • 14. What organisms live near hydrothermal vents near submarine volcanoes?
A) Tropical fish
B) Chemotrophs
C) Large coral colonies
D) Photosynthetic algae
  • 15. What caused the mysterious humming sounds detected in 2018?
A) Migration of whales
B) A major earthquake in the deep ocean
C) Formation of a submarine volcano off Mayotte
D) Industrial activity on the ocean floor
  • 16. How are submarine eruptions detected in deep ocean basins?
A) Visible light from the surface
B) Monitoring of continental drift
C) Satellite imagery
D) Hydrophones and water discoloration
  • 17. What is the primary reason large submarine eruptions may not disturb the ocean surface?
A) Rapid cooling and water buoyancy
B) The volcanoes are too small
C) The water is too shallow
D) Lack of volcanic gases
  • 18. Which of the following is considered a supervolcano site?
A) Mauna Loa
B) Mount Etna
C) Lake Toba
D) Vesuvius
  • 19. How many large plates is the Earth's lithosphere broken into, according to plate tectonics?
A) Ten
B) Eight
C) Sixteen
D) Twenty
  • 20. What process in the underlying mantle causes tectonic plates to move?
A) Convection
B) Sublimation
C) Evaporation
D) Radiation
  • 21. What term describes volcanoes that have more than one period of activity?
A) Extinct
B) Polygenetic
C) Divergent
D) Monogenetic
  • 22. Where does most volcanic activity on Earth occur?
A) In the middle of continental plates
B) In the atmosphere
C) At the North Pole
D) Along plate boundaries
  • 23. What happens to the lithosphere at convergent boundaries?
A) It is destroyed
B) It turns into gas
C) It remains unchanged
D) It is created
  • 24. What happens to the lithosphere at divergent boundaries?
A) It is created
B) It is destroyed
C) It disappears
D) It melts instantly
  • 25. What are deep sea vents also known as?
A) Tectonic chimneys
B) Magma chambers
C) Black smokers
D) Volcanic arcs
  • 26. Which country is cited as an example of a mid-oceanic ridge above sea level?
A) Hawaii
B) Japan
C) Iceland
D) Indonesia
  • 27. What is the process where an oceanic plate dives beneath a continental plate called?
A) Convection
B) Divergence
C) Expansion
D) Subduction
  • 28. What process lowers the melting temperature of the mantle wedge in subduction zones?
A) Adiabatic cooling
B) Flux melting
C) Decompression melting
D) Radioactive decay
  • 29. What is a major characteristic of magma produced in subduction zones?
A) High silica content
B) Low viscosity
C) Low silica content
D) High iron content
  • 30. What are chains of volcanoes near subduction zones called?
A) Mid-ocean ridges
B) Hotspots
C) Volcanic arcs
D) Lithospheric plates
  • 31. What are hotspots thought to be formed by?
A) Mantle plumes
B) Divergent plates
C) Black smokers
D) Subduction
  • 32. Which island group is cited as an example of hotspot volcanism?
A) Hawaiian Islands
B) Japanese archipelago
C) Cascade volcanoes
D) Icelandic ridge
  • 33. Where is the Yellowstone Caldera currently located?
A) Icelandic plate
B) North American plate
C) Pacific plate
D) Indonesian plate
  • 34. What happens to a volcano as a tectonic plate drifts off a mantle plume?
A) It becomes inactive
B) It moves with the plume
C) It erupts more frequently
D) It grows larger
  • 35. What is the current status of the mantle plume hypothesis?
A) It is no longer studied
B) It is universally accepted as fact
C) It has been proven false
D) It has been questioned
  • 36. Where are most volcanoes on Earth found?
A) Underwater
B) On high mountain peaks
C) In the center of continents
D) Near the North and South Poles
  • 37. What type of plate boundary creates the Pacific Ring of Fire?
A) Stable
B) Divergent
C) Transform
D) Convergent
  • 38. Which type of volcanic activity is usually nonexplosive?
A) Transform
B) Divergent
C) Hotspot
D) Convergent
  • 39. What is the Hawaiian hotspot an example of?
A) Divergent plate boundary
B) Transform faulting
C) Intraplate volcanism
D) Convergent subduction
  • 40. How can large volcanic eruptions affect the atmosphere?
A) They cool the troposphere
B) They heat the troposphere
C) They remove all oxygen
D) They increase sunlight penetration
  • 41. What is the etymological origin of the word volcano?
A) A Greek mountain deity
B) An ancient term for fire
C) The Roman god Vulcan
D) The Latin word for mountain
  • 42. What is the study of volcanoes called?
A) Seismology
B) Volcanology
C) Tectonics
D) Geology
  • 43. What does the 2009 definition of a volcano include?
A) Cryovolcanism
B) Only continental volcanoes
C) Only atmospheric gas releases
D) Only molten rock eruptions
  • 44. Which planet is noted as having very numerous volcanoes?
A) Jupiter
B) Venus
C) Mercury
D) Saturn
  • 45. What can develop under the interior of a continent due to sustained upwelling of hot mantle rock?
A) Oceanic trenches
B) Subduction
C) Tectonic folding
D) Rifting
  • 46. What is an early stage of continental rifting characterized by?
A) Flood basalts
B) Mountain building
C) Deep ocean trenches
D) Tidal waves
  • 47. What is a failed rift called?
A) Fissure vent
B) Aulacogen
C) Cryovolcano
D) Shield volcano
  • 48. Which location is mentioned as an example of an East African Rift volcano?
A) Olympus Mons
B) East African Rift
C) Kīlauea
D) Lake Taupō
  • 49. What allows magma to rise through the crust?
A) A crater
B) A fissure
C) A plateau
D) A conduit
  • 50. What is Puʻu ʻŌʻō an example of?
A) A summit crater
B) A cryovolcano
C) A massive plateau
D) A smaller cone on a flank
  • 51. What kind of volcanic activity do mud volcanoes often NOT involve?
A) Surface gas emission
B) Low temperatures
C) Magmatic activity
D) Vent activity
  • 52. What is the primary characteristic of a fissure vent eruption?
A) Highly explosive
B) Catastrophic
C) High viscosity
D) Non-explosive
  • 53. Which of these is the largest known volcano in the Solar System?
A) Olympus Mons
B) Kīlauea
C) Lake Taupō
D) Puʻu ʻŌʻō
  • 54. What is another name for lava domes?
A) Composite volcanoes
B) Cinder cones
C) Shield volcanoes
D) Dome volcanoes
  • 55. Which mountain is cited as an example of a lava dome formed within a previous crater?
A) Mount St. Helens
B) Mount Fuji
C) Parícutin
D) Lassen Peak
  • 56. What is the typical height range of a cinder cone?
A) 500 to 1,000 metres
B) 5 to 10 metres
C) 1,000 to 5,000 metres
D) 30 to 400 metres
  • 57. What is another name for stratovolcanoes?
A) Dome volcanoes
B) Cryptodomes
C) Maar craters
D) Composite volcanoes
  • 58. What is the typical slope angle of a stratovolcano?
A) 45–60°
B) 30–35°
C) 5–10°
D) 10–20°
  • 59. Which city was destroyed by a pyroclastic surge in 1902?
A) Tokyo
B) Mexico City
C) Saint-Pierre
D) Naples
  • 60. Where do subglacial volcanoes develop?
A) Underneath ice caps
B) Inside tectonic plates
C) On oceanic ridges
D) At the bottom of deep oceans
  • 61. What is another name for subglacial volcanoes?
A) Tuyas
B) Cinder cones
C) Shield volcanoes
D) Stratovolcanoes
  • 62. Where does the term 'tuya' originate from?
A) Tuya Valley
B) Tuya Butte
C) Tuya Island
D) Tuya Glacier
  • 63. Where are the Tuya Mountains located?
A) Southern Alberta
B) Northern British Columbia
C) Central Yukon
D) Western Ontario
  • 64. What are fumaroles erupting sulfurous gases called?
A) Hot springs
B) Solfataras
C) Geysers
D) Mud pools
  • 65. What substance is primarily found in volcanic gases?
A) Steam
B) Liquid mud
C) Molten rock
D) Solid tephra
  • 66. What are solid particles ejected through the air during an eruption called?
A) Palagonite
B) Pillow lava
C) Tephra
D) Slurry
  • 67. What causes the pressure to build up in geysers?
A) Magmatic gases
B) Tectonic shifting
C) Surface water weight
D) Steam pressure
  • 68. Which of these is an example of a volcano formed from felsic lava?
A) Lassen Peak
B) Mauna Loa
C) Novarupta
D) Kilauea
  • 69. What is the common name for pyroclastic flow deposits?
A) Tuff
B) Ignimbrites
C) Basalt
D) Obsidian
  • 70. What is the approximate maximum temperature of pyroclastic flows?
A) 850 °C
B) 100 °C
C) 500 °C
D) 1,200 °C
  • 71. Intermediate magma is characterized by what silica percentage range?
A) 52–63%
B) Greater than 63%
C) 45–52%
D) Less than 45%
  • 72. Which volcanoes are most commonly associated with intermediate magmas?
A) Flood basalts
B) Stratovolcanoes
C) Lava domes
D) Shield volcanoes
  • 73. Which surface texture of mafic lava is described as rough and clinkery?
A) Block lava
B) Obsidian
C) ʻAʻa
D) Pāhoehoe
  • 74. What is the correct term for lava containing 45% or less silica?
A) Intermediate
B) Felsic
C) Ultramafic
D) Basaltic
  • 75. What is the common name for ultramafic flows?
A) Rhyolites
B) Dacites
C) Ignimbrites
D) Komatiites
  • 76. Rhyolitic flows consist largely of which material?
A) Tuff
B) Basalt
C) Pāhoehoe
D) Obsidian
  • 77. What is the maximum diameter of particles classified as volcanic ash?
A) 5 mm
B) 2 mm
C) 1 mm
D) 10 mm
  • 78. What term refers to shattered volcanic material?
A) Lava flows
B) Magma deposits
C) Sedimentary rock
D) Volcaniclastics
  • 79. What process is described as the erosion of a volcano's mantle to reveal its inner anatomy?
A) Dissection
B) Effusion
C) Crystallization
D) Decompression
  • 80. What is the primary factor that forms a resistant plug in an extinct volcano?
A) Pressure buildup
B) Erosion
C) Tectonic uplift
D) Magmatic flow
  • 81. Which location is cited as a famous example of an exposed volcanic plug?
A) Mount Kaimon
B) Cinder Hill
C) Devils Tower
D) Mount Vesuvius
  • 82. According to the Smithsonian Institution, how many confirmed eruptions occurred in the Holocene Epoch as of August 2026?
A) 10,652
B) 1,214
C) 168
D) 1,113
  • 83. What type of eruption is associated with a VEI of 0?
A) Vulcanian
B) Plinian
C) Ultra-Plinian
D) Hawaiian-type
  • 84. What is the primary product of Strombolian eruptions?
A) Scoria
B) Rhyolitic lava
C) Country rock
D) Pumice
  • 85. Which eruption type features the destruction and rebuilding of a central dome?
A) Vulcanian
B) Plinian
C) Hawaiian
D) Phreatic
  • 86. Which eruption type is associated with dome growth and collapse producing pyroclastic flows?
A) Strombolian
B) Ultra-Plinian
C) Hawaiian
D) Peléan
  • 87. Who chronicled the Plinian eruption of 79 AD?
A) Pliny the Elder
B) The Smithsonian Institution
C) Vulcano
D) Pliny the Younger
  • 88. What is the largest and most intense type of volcanic eruption mentioned?
A) Ultra-Plinian
B) Vulcanian
C) Peléan
D) Strombolian
  • 89. Which feature of Mount Bird is an example of a dissected volcano?
A) Devils Tower
B) Cinder Hill
C) Mount Pelée
D) Mount Kaimon
  • 90. Which of the following terms is used to informally describe a volcano?
A) Saturated
B) Dormant
C) Submerged
D) Volatile
  • 91. Are the definitions for volcanic activity terms uniform among volcanologists?
A) Only for extinct volcanoes
B) Yes
C) No
D) Only for active volcanoes
  • 92. How does the activity level of most volcanoes appear?
A) As a random variable
B) As a three-step process
C) As a graduated spectrum
D) As a fixed binary state
  • 93. Do volcanic activity categories overlap?
A) No
B) Only for extinct volcanoes
C) Yes
D) Only for erupting volcanoes
  • 94. Which term is listed in the text as a way to describe a volcano?
A) Explosive
B) Extinct
C) Shielded
D) Composite
  • 95. What is the status of definitions for erupting, active, dormant, and extinct volcanoes?
A) Legally defined globally
B) Strictly standardized
C) Universally agreed upon
D) Not entirely uniform
  • 96. What is considered a sign of volcanic unrest according to the USGS?
A) Decreased volcanic gas emissions.
B) Ground inflation.
C) Increased vegetation growth.
D) Cooling surface temperatures.
  • 97. Which volcano erupted unexpectedly in 2008, challenging old definitions?
A) Taftan.
B) Pinatubo.
C) Chaitén.
D) Mount Edgecumbe.
  • 98. What does long-term volcano dormancy often lead to?
A) Government funding for research.
B) Better disaster preparation.
C) Decreased awareness.
D) Increased seismic monitoring.
  • 99. Which volcano was not initially seismically monitored before its 1991 eruption?
A) Yellowstone.
B) Taftan.
C) Pinatubo.
D) Soufrière Hills.
  • 100. Before its 2006 eruption, when did Fourpeaked Mountain last erupt?
A) In 1991.
B) In 79 CE.
C) Before 8000 BCE.
D) In 1995.
Created with That Quiz — where a math practice test is always one click away.