The theory that describes the formation, movements, and interactions of plates is called plate _?_.
The hypothesis that says that the continents have move or drifted from one place to another.
The German scientist who proposed the hypothesis of continental drift.
shape of the continents and fossil evidence
Early evidence that backed Wegener's hypothesis of continental drift
A reptile that lived 270 million years ao, and its remains are found only in parts of South America and Africa.
A long of chain of voclanic mountains on the ocean floor with a deep central valley.
Information about magnetic reversals stored in bands of igneous rocks on the ocean floor that lie on both sides of a mid-ocean ridge
evidence that new rock is being formed as plates move apart
The rocks along mid-ocean ridges are unusually warm. The amount of heat leaving the rocks decreases as you move further from the mid-ocean ridges.
A boundary between two lithospheric plates that are moving apart.
Deep valleys at the center of a mid-ocean ridge.
A boundary between two plates that are moving toward each other.
The boundary between two plates where one plate plunges beneath another.
A long, deep trench that forms along a subduction boundary.
The _?_ Trench is an example of a deep-sea trench.
The boundary that forms when two continents collide and are welded into a single, larger continent.
An example of a land form caused by a collision boundary.
A boundary between two plates that are sliding past each others.
San Andreas fault
An example of a transform boundary.
A model of how moving magma circulating in the Earth helps move plates.
The older, denser lithosphere slides away from the ridge and helps push the plates apart.
The force that a sinking edge of a subducting plate exerts on the rest of the plate.
The name given to the landmass when all the continents were welded together.
A name for an ancient continental core
Sediments from the ocean floor that is scrapped off and left behind as an oceanic plate plunges under a continental plate at a subduction boundary
A source of growth material that comes from magma and volcanoes.
A source of growth material that consists of the sediments that are deposited by rivers that flow off of the continents
A large block of lithospheric plate that has been moved, often over a distance of thousands of kilometers, and attached to the edge of a continent.
western coast of South America
A good example of ocean-continent subduction.
A good example of sea floor spreading.
satellite laser ranging
A technique which is used to measure the distance that the continents are currently moving.