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According to the diagram, the deep trench along the west coast of South America is caused by movement of the oceanic crust that is
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
Mid-ocean ridges (rifts) normally form where tectonic plates are
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
Which cross-sectional diagram of a portion of the crust and mantle best shows the pattern of mantle convection currents that are believed to cause the formation of a mid-ocean ridge?
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
According to the diagram, what is the approximate rate of seafloor spreading?
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
Which inference can best be made from the diagram?
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
Oceanic crust is sliding beneath the Aleutian Islands in the North Pacific Ocean, forming the Aleutian Trench at a
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
Crustal formation, which may cause the widening of an ocean, is most likely occurring at the boundary between the
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
The occurrence of high-heat floors at the ridge center provides evidence of the
existence of rising mantle convection currents
sinking beneath the continental crust
Indian-Australian Plate and the Antarctic Plate
D
40 km/million years
diverging
convergent plate boundary between the Pacific Plate and the North American Plate
The orientation of the Earth's magnetic field has reversed with time.
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