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The thing that Wegener observed was the puzzle-like fit of _____.
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
Fossils of mesosaurus, an early land-dwelling reptile, have been found in South America and South Africa. The locations of these fossils suggest that these areas were once _____.
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
Who proposed the theory of Seafloor Spreading?
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
Scientists know that the plates move a few centimeters to a few inches per _____.
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
Why did most scientists not believe Wegener's theory?
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
Seafloor spreading occurs because _____.
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
Bands of rock on the seafloor showing alternating bands of magnetism tells us that Earth's magnetic field _____
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
Which was a piece of evidence to support the theory of Seafloor Spreading?
Wegener could not prove the how or why the continents moved.
Harry Hess
year
molten material beneath the seafloor rises to the surface
South America and Africa
connected to one another
Younger rocks were found at the mid-ocean ridge, while older rocks were found at subduction zones.
reversed itself in the past
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