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Why does one continental plate slide under the other?
Because magma rises through hot spots( holes in the ground on the ocean floor) and cools forming new crust which repeats over hundreds of years making the oceanic crust more dense than continental crust. Since the oceanic crust is more dense, it sinks faster causing it to slide under the continental crust
What was one of the main objections to Wegner's continental drift hypothesis?
One main objection to Wegner's continental drift hypothesis was the lack of a plausible mechanism to explain how continents could move through solid oceanic crust. At that time, the idea of continental drift contradicted prevailing scientific beliefs about the rigidity of the Earth's crust.
How does seafloor spearing and continental drift link together?
Seafloor spreading and continental drift are linked through the theory of plate tectonics. Seafloor spreading occurs at mid-oceanic ridges, where new crust is formed and pushes apart the plates on either side. This process helps drive the movement of continents, as the newly formed crust pushes older crust away from the ridges and towards the continents, contributing to the overall process of continental drift.
New oceanic lithosphere forms as a result of?
New oceanic lithosphere forms as a result of seafloor spreading at mid-ocean ridges. Magma rises from the mantle, solidifies at the mid-ocean ridge, and creates new oceanic crust. This process leads to the continuous expansion of the ocean floor.
Does the oceanic plate theory provide evidence for continental drift?
Yes
Is the theory of the continental drift true?
Continental Drift is an obsolete name for the theory of Plate Tectonics and yes, it is true. It has been proved in many ways, by comparing the composition of oceanic crust and its ages with that of the continental crust, by plotting the reversals of magnetism in the oceanic crust and many other ways.
Match the feature or term in column 1 to the the characteristics in column 2?
Volcano develops from one place lives under another continental drift moving plates subduction zone were oceanic crust collides with the continental crust magma made from melting plates I voice typed
Why does one continental plate slide under the other?
Because magma rises through hot spots( holes in the ground on the ocean floor) and cools forming new crust which repeats over hundreds of years making the oceanic crust more dense than continental crust. Since the oceanic crust is more dense, it sinks faster causing it to slide under the continental crust
What is the difference between a continental and an oceanic crust collision?
Oceanic plates don't collide. They split and drift away from the fractures, which becomes filled with erupted magma to form spreading-ridges. E.g. the Mid-Atlantic / Reykjanes Ridges whose junction hosts Iceland. A collision between oceanic plateand continent usually results in subduction, with the ocean floor being bent downwards and forced below the continent. The results are earthquakes from the stick-slip movement on the thrust-plane, and violently explosive arc volcanoes and plutonic developmentfrom magmarising from partial melting of the subducted crust plus water and organically-rich sediment dragged down with it. E.g., S.E Asia and the Pacific 'Ring of Fire'. Collision between continents as the ocean finally closes develops mountain ranges. The Himalayas are still rising as India continues to push Northwards into Asia.
What was one of the main objections to Wegner's continental drift hypothesis?
One main objection to Wegner's continental drift hypothesis was the lack of a plausible mechanism to explain how continents could move through solid oceanic crust. At that time, the idea of continental drift contradicted prevailing scientific beliefs about the rigidity of the Earth's crust.
How does seafloor spearing and continental drift link together?
Seafloor spreading and continental drift are linked through the theory of plate tectonics. Seafloor spreading occurs at mid-oceanic ridges, where new crust is formed and pushes apart the plates on either side. This process helps drive the movement of continents, as the newly formed crust pushes older crust away from the ridges and towards the continents, contributing to the overall process of continental drift.
What is the difference of seafloor spreading and continental drift?
In continental drift it says that they were drifted apart by the spin of the earth and in seafloor spreading the earths crust is drifted apart by the ridges in the mid-ocean.
How does seafloor spreading explain continental drift?
Seafloor spreading is caused by two plates moving apart. This is caused by plate tectonics. Continental drift is also caused by plate tectonics. Therefore, we can conclude that continental drift is related to seafloor spreading. When the plates move, it carries the continents with it, and thus the continents drift away from each other.
How does seafloor spreading support continental drift?
Seafloor spreading occurs at mid-ocean ridges where new oceanic crust is formed and spreads away from the ridge. This process provides evidence for continental drift as it shows that the oceanic crust is younger near the ridges and gets progressively older farther away. This supports the idea that continents were once connected and have since moved apart.
New oceanic lithosphere forms as a result of?
New oceanic lithosphere forms as a result of seafloor spreading at mid-ocean ridges. Magma rises from the mantle, solidifies at the mid-ocean ridge, and creates new oceanic crust. This process leads to the continuous expansion of the ocean floor.
What layer of earth forms the continents?
the crust. the layer below that is the layer of molten lava called the mantle. the continental plates move and float on this. this is known as continental drift
Does the oceanic plate theory provide evidence for continental drift?
Yes
