Earthquake/Volcano Vocabulary

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crust
mantle
inner core
magnitude
transform fault
boundary
fault
seismogram
epicenter
focus
convection
p-wave
Pangaea
divergent
boundary
seismograph
convergent
boundary
volcano
s-wave
aftershock
plate
plate
tectonics
a device that
records ground
movements
caused by
seismic waves as
they move
through Earth
A section of the
Earth that slowly
moves carrying
pieces of
continental and
oceanic crust
A break in Earth’s
crust along which
rocks move
A wave that
follows the main
shock of an
earthquake
The point on
Earth’s surface
directly above an
earthquake’s
focus
A weak spot in
the crust where
magma has come
to the surface
A dense sphere
of solid iron and
nickel at the
center of the
earth
The layer of rock
that forms
Earth’s outer
surface
The transfer of
heat by the
movement of a
fluid
A plate boundary
where 2 plates
move toward
each other
The layer of hot,
solid material
between Earth’s
crust and core
A plate boundary
where 2 plates
move away from
each other
When two plates
slide past each
other and no
new land forms
The
measurement of
an earthquake’s
strength based
on seismic waves
and movement
along faults
The point
beneath Earth’s
surface where
rock breaks
under stress and
causes an
earthquake
The name of the
single landmass
that broke apart
200 million years
ago, which has
given us the 7
continents
A type of seismic
wave that
compresses and
expands (pushes
and pulls)
A type of seismic
wave that moves
the ground up
and down or side
to side
The theory that
pieces of Earth’s
lithosphere are in
constant motion,
driven by
convection
currents in the
mantle
The record made
by a seismograph
that shows the
earthquake’s
waves
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