Volcano Hazards

What is a volcano?

• A mountain that has lava all over it

• A giant hill filled with magma

• A long high sea wave

• A hole in the Earth where magma erupts

What are the different types of volcanoes?

• Shield volcanoes, stratovolcanoes, and caldera volcanoes

• Cinder cone volcanoes, composite volcanoes, and supervolcanoes

• Shield volcanoes, caldera volcanoes, and supervolcanoes

• Cinder cone volcanoes, shield volcanoes, and stratovolcanoes

What are the most explosive types of volcanoes?

• Shield

• Composite

• Cinder Cone

___ is molten rock beneath the Earth's surface and ___ is molten rock above the Earth's surface.

• Magma; lava

• Magma; caldera

• Lava; magma

• Caldera; lava

What are the parts of a volcano?

• Magma chamber, vent, crater

• Lava field, ash cloud, steam vent

• Lava tube, caldera, pyroclastic flow

• Shield, stratovolcano, cinder cone

What can travel long distances and have a cooling effect on the atmosphere after a volcanic eruption?

• Ashfall

• Ballistic projectiles

• Lahar

What is a potential hazard of ashfall?

• Contamination of water resources

• Cooling effect on the atmosphere

• Fertilization of agricultural lands

• Improved air quality

What is the maximum distance that ballistic projectiles can travel away from the vent of an erupting volcano?

• 5 meters

• 5 kilometers

• 50 meters

• 50 kilometers

Which gas released during volcanic eruptions is dangerous for livestock that ingest contaminated vegetation?

• Carbon dioxide

• Sulfur dioxide

• Hydrogen fluoride

• Carbon monoxide

What causes lahar to occur?

• Heavy rainfall

• Sudden draining of a crater lake

• Collapse of natural or man-made dams

• All of the above