Review Quiz Volcanoes

a weak to violent eruption characterized by lava fountains and outbursts of molten lava.

• Vulcanian

• Strombolian

• Plinian

• Pelean

an eruption resulting from the release of large quantities of accumulated magmatic gas, which lifts fine ash with great force high into the air, forming voluminous cauliflower clouds.

• Vulcanian

• Strombolian

• Plinian

• Pelean

a violent explosion characterized by voluminous ejections of pumice and by ash flows.

• Vulcanian

• Strombolian

• Plinian

• Pelean

an eruption that results from an ejection of magmatic gases and steam produced by the conversion of groundwater to steam by ascending magma

• Phreatic

• Phreatomagmatic

• Vulcanian

• Pelean

an eruption that occurs when gas-rich (high water content), pasty (high silica content) lava accumulates to form a dome on the volcano edifice or beneath its surface.

• Phreatic

• Phreatomagmatic

• Vulcanian

• Pelean

an explosion driven by steam produced when groundwater is heated due to an underlying heat source.

• Phreatic

• Phreatomagmatic

• Vulcanian

• Pelean

is the fast movement of a turbulent mass of fragmental volcanic materials (ash and rocks) mixed with hot gases down the slope

• Lahar

• Lava flow

• Pyroclastic flow

• Secondary explosion

 is a streamlike flow of incandescent, molten rock materials erupted from a volcano. 

• Lahar

• Lava flow

• Pyroclastic flow

• Secondary explosion

Is a rapid-flowing thick mixture of volcanic material and water,usually generated along river channels by extreme rainfall.

• Lahar

• Lava flow

• Pyroclastic flow

• Secondary explosion

is a non-eruptive event generated when groundwater comes in contact with still hot pyroclastic flow deposits at the slope of a volcano and converts it into steam

• Lahar

• Lava flow

• Pyroclastic flow

• Secondary explosion