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) Rhyolitic magma
B) Ultrapotassic magma
C) Basaltic magma
D) Andesitic magma
- 2. What instrument is used to measure volcanic seismic activity?
A) Barometer
B) Seismometer
C) Anemometer
D) Thermometer
- 3. What is the main factor that influences the viscosity of magma?
A) Gas content
B) Temperature
C) Silica content
D) Color
- 4. What causes a caldera to form?
A) Erosion by water
B) Wind erosion
C) Collapse of a volcanic cone after an eruption
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) Cinder cone
B) Stratovolcano
C) Caldera
D) Shield volcano
- 7. What is the volcanic term for the opening through which lava erupts?
A) Fissure
B) Dome
C) Crater
D) Vent
- 8. Which country is home to the Nevado del Ruiz volcano?
A) Peru
B) Mexico
C) Colombia
D) Ecuador
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