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volcano vocabulary

demarcus

QuestionAnswer
magma Hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling.
lava Hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
viscosity a liquid's resistance to flowing
silica A material found in magma that is formed from the elements oxgyen and silicon
pahoehoe A hot fast-moving type of lava that hardnesto form smooth, ropelike coils
aa A slow-moving type of lava that hardens th form rough chunks; cooler than pahoehoe
volcanic ash Volcanic ash consists of small tephra, which are bits of pulverized rock and glass created by volcanic eruptions,United States Geologica
cinders A small piece of partly burned coal or wood that has stopped giving off flames but still has combustible matter in it.
bombs A container filled with explosive, incendiary material, smoke, gas, or other destructive substance, designed to explode on impact or
vent the opening throught which molten rock and gas leave a volcano
volcano A weak spot in the crust where magma has come to the surface
crater A bowl-shaped area that forms around a volcano's central opening
pyroclastic flow the expulsion os ash, cinders, bombs, and gases during an expolsive volcanic eruption
Created by: yhaoo.com
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