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