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