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