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8th gr Sci Ch 8 Voca

8th grade science Chapter 8 Vocabulary

QuestionAnswer
Is a depositional mountain landform built from solidified magma from deep in the earth volcano
in geology refers to anything having to do with molten earth materials, including the rocks and minerals that come from them. Igneous
is formed when magma forces its way to the surface, quickly widening the hold and forming this vent
forms after magma erupts from the vent lava
a depression at the top of the cone crater
solidified lava, such as ash, cinders, bombs, sometimes large chunks of rocks. pyroclastic material
a layer of loose pyroclastic materials and ash covering the ground tephra
thick layers of igneous rocks cover many places in the world, including the ocean floor flood basalts
quiet eruptions of mostly runny, basaltic lavas form these volcanoes. Like a broad shield, they are a flat, dome shape with gently sloping sides shield volcanoes
a small, steep-sided volcano made mainly of cinder-like pyroclastic materials. Cinder cones generally form during brief, explosive emissions of cinders and ash cinder cones
eruptions that alternately eject lava and pyroclastic materials from composite cones or this stratovolcanoes
currently erupting or has been observed to erupt in historical times. active volano
an inactive but uneroded volcano, future eruption may be possible dormant volcano
a volcano that shows no signs of seismic or volcanic activity, heavily eroded extinct volcano
the best indicator of a volcano's destructiveness. Open-ended scale starting at 0. Volcanic Explosivity Index
Occurred when magma worked its way into cracks and spaces inside the crust near volcanic vents intrusive volcanism
steam from ground water heated by magma intrusions that can be harnessed to generate electrical power and heat geothermal energy
Created by: bgpalmers
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