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#224775

Earthquake & Volcano

QuestionAnswer
the study of earthquakes seismology
a break in the Earth's crust along which blocks of the crust slide relative to one another due to tectonic forces fault
the change in the shape of rock in response to stress deformation
the sudden return of elastically deformed rock to its undeformed shape elastic rebound
waves of energy that travel through the Earth seismic waves
the fastest type of seismic wave; can travel through solids, liquids, and gases; also known as pressure waves and primary waves P waves
the second-fastest type of seismic wave; cannot travel through materials that are completely liquid; also known as shear waves and secondary waves S waves
an instrument located at or near the surface of the Earth that records seismic waves seismograph
a tracing of earthquake motion created by a seismograph seismogram
the point on the Earth's surface directly above an earthquake's starting point epicenter
the point inside the Earth where an earthquake begins focus
a place within the Earth where the speed of seismic waves increases sharply; marks the boundary between the Earth's crust and mantle Moho
a mountain that forms when molten rock, called magma, is forced to the Earth's surface volcano
magma that flows onto the Earth's surface lava
fragments of rock that are created by explosive volcanic eruptions pyroclastic material
a large, gently sloped volcano that forms from repeated, nonexplosive eruptions of lava shield volcano
a small, steeply sloped volcano that forms from moderately explosive eruptions of pyroclastic material cinder cone volcano
a volcano made of alternating layers of lava and pyroclastic material; also called stratovolcano composite volcano
a funnel-shaped pit around the central vent of a volcano crater
a circular depression that forms when a magma chamber empties and causes the ground above to sink caldera
Created by: cvillah
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