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VOLCANO vent in earth crust which melted or molten rock flows

MAGMA molten rock below earth surface

LAVA molten rock that erupt in earth surface

HOTSPOTS volcanoes that are not associated with plate boundaries

SHIELDVOLCANOES common divergent plate boundaries and oceanic hot spot

C O M P O S I T E V O L C ANOES steep sided volcano that result from explosive eruptions of andesitic and rhyolitic lava and ash in convergent plate boundaries

VOLCANICASH particle pulverized rock and glass

VISCOSITY liquid resistance to flow