Volcanoes Quiz

What type of magma forms at constructive boundaries and hotspots over oceans?

• Rhyolitic magma

• Basaltic magma

• Dacitic magma

• Andesitic magma

Which type of volcano is more closely associated with composite or strato-volcanoes that produce more explosive eruptions?

• Shield Volcano

• Cinder Volcano

• Composite Volcano

• Lava Dome

What is the main hazard that can result from lava flow?

• Forest Fires

• Landslides

• Tsunamis

• Earthquakes

Which gas emitted by volcanoes is potentially hazardous to people, animals, agriculture, and property?

• Sulfur Dioxide

• Oxygen

• Carbon Monoxide

• Nitrogen

What is the primary hazard that occurs when superheated gas, pumice, and ash fly down the flank of the volcano?

• Tsunamis

• Pyroclastic Flows

• Lahars

• Landslides

What type of lava is smooth and billowy in appearance, low in viscosity, and generally travels slowly?

• A'A lava

• Pahoehoe lava

• Andesitic lava

• Rhyolitic lava

Which type of volcano is most commonly found on the flanks of shield and composite volcanoes?

• Caldera Volcano

• Stratovolcano

• Lava Dome

• Cinder Volcano

What is the main compound in magma that influences the explosiveness of its eruptions?

• Iron

• Silica

• Aluminum

• Calcium

What is the main secondary hazard linked to the structural collapse of a volcano?

• Lava Flows

• Ash Fall

• Landslides

• Earthquakes

What type of magma is cooler, has much greater silica content, and produces more viscous lava?

• Andesitic magma

• Dacitic magma

• Basaltic magma

• Rhyolitic magma