deep cracks that form between two tectonic plates that are pulling away from each other
deep cracks that form between two tectonic plates that are pulling away from each other
rift
The supercontinent that formed 300 million years ago
The supercontinent that formed 300 million years ago
Pangea
A long undersea mountain chain that has steep, narrow valley at its center
A long undersea mountain chain that has steep, narrow valley at its center
Mid-Ocean Ridge
Large crater caused by the violent explosion of a volcano that collapses into a depression
Large crater caused by the violent explosion of a volcano that collapses into a depression
Caldera
a plate bounadry where two plates are moving towards each other forcing either subduction or upward folding
a plate bounadry where two plates are moving towards each other forcing either subduction or upward folding
Convergent Boundary
The process by which one lithospheric plate moves beneath another as a result of tectonic forces
The process by which one lithospheric plate moves beneath another as a result of tectonic forces
Subduction
Refers to the site of an earthquake within the Earth
Refers to the site of an earthquake within the Earth
Focus
a large volcano with shallow-sloping sides and a flattened dome
a large volcano with shallow-sloping sides and a flattened dome
Shield Volcano
measure of how much damage an earthquake causes
measure of how much damage an earthquake causes
intensity
Seismic wave that travels along the earth's surface
Seismic wave that travels along the earth's surface
surface waves
the gradual movement and formation of continents apart and then back together
the gradual movement and formation of continents apart and then back together
Continental Drift
Crack in the earth's crust resulting from the displacement of one side with respect to the other
Crack in the earth's crust resulting from the displacement of one side with respect to the other
Fault
the solid part of the earth consisting of the crust
the solid part of the earth consisting of the crust
lithosphere
the process of change during which supercontinents develop and later break apart
the process of change during which supercontinents develop and later break apart
supercontinent cycles
a from of lava flow of basaltic rock, usually dark-colored with a smooth or ropey surface
a from of lava flow of basaltic rock, usually dark-colored with a smooth or ropey surface
pahoehoe
A portion of the Earth's surface that may be far from tectonic plate boundaries and that experiences volcanism due to a rising mantle plume
A portion of the Earth's surface that may be far from tectonic plate boundaries and that experiences volcanism due to a rising mantle plume
Hot Spot
molten rock within the earth's crust
molten rock within the earth's crust
magma
A plate boundary where new crust is being created as the old crust on each side moves away as if on a conveyor belt
A plate boundary where new crust is being created as the old crust on each side moves away as if on a conveyor belt
Divergent Boundary
tectonic plate motion due to higher densities and one plate being pulled under the other
tectonic plate motion due to higher densities and one plate being pulled under the other
Slab pull
landmass comprising more than one continent
landmass comprising more than one continent
Super continent
molten rock expelled by a volcano during an eruption
molten rock expelled by a volcano during an eruption
lava
volcanic rock that has been framented by explosions during an eruption
volcanic rock that has been framented by explosions during an eruption
pyroclastic material
Shaking and vibration at the surface of teh earth resulting from underground movement along a fault plane or from volcanic activity
Shaking and vibration at the surface of teh earth resulting from underground movement along a fault plane or from volcanic activity
Earthquake
the study of the record of the Earth's magnetic field preserved in various magnetic minerals through time
the study of the record of the Earth's magnetic field preserved in various magnetic minerals through time
Paleomagnetism
the point on the Earth's surface directly above the focus of an earthquake
the point on the Earth's surface directly above the focus of an earthquake
Epicenter
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