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The science of how volcanoes erupt (e.g., Nevado del Ruiz) - Quiz
  • 1. What type of magma is most associated with explosive volcanic eruptions?
A) Ultrapotassic magma
B) Rhyolitic magma
C) Andesitic magma
D) Basaltic magma
  • 2. What instrument is used to measure volcanic seismic activity?
A) Anemometer
B) Seismometer
C) Thermometer
D) Barometer
  • 3. What is the main factor that influences the viscosity of magma?
A) Silica content
B) Gas content
C) Color
D) Temperature
  • 4. What causes a caldera to form?
A) Collapse of a volcanic cone after an eruption
B) Erosion by water
C) Wind erosion
D) Lava flow hardening
  • 5. What is the study of volcanoes called?
A) Meteorology
B) Geology
C) Seismology
D) Volcanology
  • 6. What term is used for the shape formed by multiple layers of lava and ash from explosive eruptions?
A) Stratovolcano
B) Cinder cone
C) Caldera
D) Shield volcano
  • 7. What is the volcanic term for the opening through which lava erupts?
A) Fissure
B) Vent
C) Crater
D) Dome
  • 8. Which country is home to the Nevado del Ruiz volcano?
A) Mexico
B) Colombia
C) Peru
D) Ecuador
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