Wegener
Dr. _____________ was a geologist in the early 1900's to gather evidence about moving land masses.
continental drift
The hypothesis that the continents slowly move across Earth's surface.
Pangaea
large, ancient landmass that was composed of all the continents joined together
Africa
The eastern part of South America appears to fit perfectly with the western coast of ________________. This is evidence that the two landmasses were once connected.
traits/age
The Appalachian Mountains of the eastern United States and the mountains of western Europe have similar ________ and are similar in _________. It is highly unlikely that these similar mountains formed separately. This is evidence that they used to be the
Glossopteris
Small plant that is still found in South America, Africa, and India
coal or oil
________ is found far from the equator. Since this forms from tropical plants, these regions must have been closer to the equator at one time but since drifted away.
Lystrosaurus
Land reptile fossil located on multiple continents; evidence of continental drift
Mesosaurus
Animal whose fossil, a small reptile who was freshwater and could not have swam across the ocean, was found both on the continents of Africa and South America
glaciers
Evidence of ___________ are found in central Africa. Since this region experiences intense heat, it is unlikely that these formed here. It is more likely that this region used to be farther from the equator.
cooler
Fossils of tropical plants are found on Greenland. Since Greenland currently has a ___________ climate, it is unlikely that these plants grew here. It is more likely that Greenland used to be closer to the equator
Mid-ocean ridge
An underwater mountain chain where new ocean floor is formed
seafloor spreading
the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
Subduction
One plate going under another plate
trench
extremely deep areas in the ocean that are created by a subducting plate
divergent boundary
A plate boundary where two plates move away from each other.
convergent boundary
A plate boundary where two plates move toward each other.
area where rock is the youngest
mid ocean ridge
area where rock is the oldest
deep sea trench