spreading of vasaltic lava over a wide expanse of earth’s crust

volcanic activity that takes place deep within earth’s interior region

happens when extreme temperature and pressure created by tectonic activity build up and erupt on the surface of the planet

regions in the mantle are the

USGS meaning

basaltic laba that cools down very slowly

A ____ is a vent from which magma, debris, and other molten materials in the planet’s interior are ejected

one of least violent explosive eruptions

consist of hot water steam and magmatic gases that explode violently into the atmosphere

violent eruptions of viscous lava, solid debris, and hot gases that are ejected at supersonic speeds from the volcano’s opening.

fluid lava sprayed from the vent or from the fissures on the flanks of the volcano

when these materials are heated, they become lighter and accumulate into a foamy, mushroom-shaped column of magma called

strands of volcanic glass formed from thin molten lava columns that have been launched high up in the atmosphere

quiet eruptions are sp known as

happens when two plates diverge

produces the steam of hot water heated by magma

volcanoes which have not erupted in a long time but may still doin the future

hawaiian term for a thin

formed by the eruptions of submarine

no longer expected to erupt are considered

volcanoes that have undergone and still undergo volcanism are considered as

mechanism by which magma rises onto earth’s crush through a volcanic vent and flows along earth’s surface.

hawaiian term for a thick lava

viscous type of lava that barely travels far from the vent after eruption

pyroclastic rocks

occurs commonly at divergent plate boundaries in the ocean floor

combination of silicon, oxygen, aluminum, iron and etc

created when erupted lava has lost huge amounts of gas that thickens the consistency of the lava

quiet eruption of lava that runs down the flanks of a volcano (runny to moderately thick)

cools down quickly

characterized ny gentle spurts of liquid basaltic lava that shoot out from the vent like a lava fountain, or from the fissures on the flanks which create lava flow

characterized by runny lava that flows from the vent in a steady stream

short but explosive eruption that ejects columns of ash and viscous lava bombs into the atmosphere

most violent explosion eruption