Effects of Volcanoes Quiz

What is the main geological problem associated with volcanoes?

• Ash fall

• Lava flows

• Gas emissions

• Prediction of eruptions

Which gas emitted by volcanoes can reflect movement of magma up the vent?

• Nitrogen

• Sulfur dioxide

• Carbon monoxide

• Oxygen

What type of flow can be the most devastating outcome of many volcanoes?

• Lava flows

• Ash fall

• Lahars

• Pyroclastic flows

Which volcano eruption resulted in a lahar that killed 28,700 people and destroyed over 5,000 structures in the city of Amero?

• Mt. Shasta

• Nevada del Ruiz

• Mt. Spurr

• Mt. St. Helens

What is the primary cause of tsunamis triggered by volcanic eruptions?

• Ash fall

• Displacement of seawater

• Landslides

• Pyroclastic flows

Which volcanic eruption caused the 'year without a summer' in 1816 due to global cooling?

• Tambora

• Krakatoa

• Mt. Pinatubo

• Mt. St. Helens

What is the defining characteristic of super volcanoes?

• Form lava domes

• Erupt every 50,000 years

• Eject less than 100 km3 of pyroclastic material

• Erupt every 10,000 years

Which super volcano eruption led to a reduction in the global human population from 100,000 individuals to as few as 3,000 individuals?

• Yellowstone Caldera

• Toba

• Mt. Pelée

• Krakatoa

What is the primary reason for the heightened monitoring of the Yellowstone Caldera in recent years?

• Historical significance

• Potential ash fall

• Increased seismic activity

• Rising magma chamber

Which volcano eruption is known for sweeping almost the entire population of St. Vincent within minutes of inhaling hot gases and ash?

• Krakatoa

• Tambora

• Mt. Pelée

• Mt. St. Helens