The science of how volcanoes erupt (e.g., Nevado del Ruiz)
- 1. What type of magma is most associated with explosive volcanic eruptions?
A) Basaltic magma
B) Andesitic magma
C) Rhyolitic magma
D) Ultrapotassic 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) Silica content
B) Temperature
C) Gas content
D) Color
- 4. What is the volcanic term for the opening through which lava erupts?
A) Fissure
B) Dome
C) Crater
D) Vent
- 5. Which country is home to the Nevado del Ruiz volcano?
A) Mexico
B) Peru
C) Ecuador
D) Colombia
- 6. What is the study of volcanoes called?
A) Volcanology
B) Meteorology
C) Geology
D) Seismology
- 7. What term is used for the shape formed by multiple layers of lava and ash from explosive eruptions?
A) Caldera
B) Cinder cone
C) Stratovolcano
D) Shield volcano
- 8. 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
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