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Geology Vocab 1

General, plates, volcanos

List the zones of the earth core, mantle, crust
upper mantle and crust lithosphere
Earth’s crust divided into number of plates that move over time, form by seafloor spreading, etc., marine plates dense and go under continental plates at subduction zones, earthquakes and volcanoes associated with plate boundaries Plate tectonics
Pangea “supercontinent” formed by convergence of Earth’s plates
plates move apart, found at spreading ocean ridges divergent plate boundary
two plates collide, denser oceanic plate moves under continental plate, called a subduction zone as oceanic plate is subducted beneath continental plate, where earthquakes occur convergent plate boundary
two plates slide past one another transform plate boundary
movement of Earth along a fault earthquake
where earthquake begins focus
seismic waves S (move slowly, shear waves, move up/down), P (move rapidly, compression waves, move side to side),
giant sea wave produced by earthquake tsunami
molten rock magma
magma once it reaches Earth’s surface lava
List the parts of a volcano magma chamber, pipe, vent, crater
this type of volcano has gentle slopes, non-violent eruptions shield volcano
this type of volcano has steep slides, explosive eruptions cinder cone volcano
this type of volcano has large, explosive eruptions (Mt. St. Helens) composite volcano
Three factors that influence volcano eruption types chemistry, temperature, pressure
Created by: FHSAPES