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Science 2

Terms

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caldera
large basin-shaped depression formed when an explosion destroys the upper part of a volcanic cone or when the magma chamber below a volcano is emptied during an eruption
S-wave
secondary wave; a wave generated by an earthquake and the second to be recorded by a seismograph
aftershock
tremor that follows and is smaller than a major earthquake
P-wave
primary wave; the fastest wave generated by an earthquake and the first to be recorded by a seismograph
dike
igneous intrusion that cuts across rock layers (something lauren wants in her mouth)
porphyritic
describing an igneous rock composed of both large and small crystals
elastic rebound theory
theory that rocks that are strained past a certain point will fracture and spring back to their original shape
stratovolcano
also called composite volcano, steep-sloped volcanic deposit with alternating layers of hardened lava flows and pyroclastic material omg lauren vicik is a babe
cinder cone
steep-sloped deposit of solid fragments ejected from a volcano
composite volcano
also called stratovolcano, steep-sloped volcanic deposit with alternating layers of hardened lava flows and pyroclastic materials
hot spot
area of volcanism within a lithospheric plate
earthquake
vibration of the earth's crust
fissure
crack in a rock surface through which lava flows laurens feet are awesome
focus
area along a fault at which slippage first occurs, initiating an earthquake
surface wave
the slowest moving seismic wave generated by an earthquake and the last to be recorded by a seismograph
seismograph
instrument used to detect and record seismic waves lauren wants big dick in her mouth
intrusive igneous rocks
rocks formed from the cooling of magma beneath the earth's surface
magma
liquid rock produced deep inside the earth
pyroclastic material
the rock fragments ejected from a volcano
epicenter
point on the earth's surface directly above the focus of an earthquake
volcanic ash
pyroclastic particles between 0.25 mm and 2 mm in diameter laurens knees are extremely sexy
magnitude
a measure of the energy released by an earthquake; described as the amount of ground motion
batholith
intrusive formations with at least a surface exposure of 100 square kilometers and reaching a depth of thousands of meters lauren vick is so ****ing hot
intensity
amount of damage caused by an earthquake
extrusive igneous rocks
rocks formed from molten lava that hardens on the earth's surface
lava
magma that reaches the earth's surface lauren is going to get boned hard
crater
funnel-shaped pit at the top of a volcanic cone
vent
opening through which molten rock flows onto the earth's surface
volcanic neck
solidified central vent of a volcano
shield volcano
has a cone of hardened lava that forms a broad base and gentle slopes
sill
sheet of hardened magma that forms between and parallel to layers of rock
tsunami
giant ocean wave that often occurs after a major earthquake with an epicenter on the ocean floor

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