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How can crust disappear at the edge of a boundary?
Crust can disappear at the edge of a boundary through subduction, where one tectonic plate is pushed beneath another. This process causes the crust to be pulled into the mantle and reabsorbed, leading to the disappearance of crust at the boundary.
New crust forms what kind of new boundaries?
New crust forms at divergent boundaries, where tectonic plates move away from each other. This process can occur in oceanic or continental crust.
How do ocean trenches help explain why crust added at ocean ridges doesn't make earth any larger?
Ocean trenches were discovered as a sign of destructive plate margins. These plate margins cause oceanic crust to subduct below the continental crust at the oceanic-continental boundary, and force the oceanic crust to move down into the Earth's mantle and melt into basaltic magma. As this is happening, magma at oceanic ridges is creating new oceanic crust at the mid-oceanic ridges. Overall, these two processes cancel each other out and so the total amount of oceanic crust is staying aproximately the same. Therefore the Earth is not growing. Hope this helps :)
When does new crust form?
There is new rocks that build up they first start as lava and they build up and make new crust
Earth does not get bigger as new oceanic crust forms?
Just as new oceanic crust forms at mid-ocean ridges, old oceanic crust is destroyed at subduction zones.
How can crust disappear at the edge of the boundary?
New crust is being added to the other edge of the boundary
Where is the new earth's crust added as it pertains to plate boundaries?
New Earth's crust is added at divergent plate boundaries, where tectonic plates move away from each other. At these boundaries, molten rock rises from the mantle and solidifies, creating new crust. A prime example of this is the Mid-Atlantic Ridge.
How can crust disappear at the edge of a boundary?
Crust can disappear at the edge of a boundary through subduction, where one tectonic plate is pushed beneath another. This process causes the crust to be pulled into the mantle and reabsorbed, leading to the disappearance of crust at the boundary.
Is the crust new or old in the mid Atlantic ridge?
The crust is new.
Where new crust is formed?
New crust is formed at a divergent boundary
New crust forms what kind of new boundaries?
New crust forms at divergent boundaries, where tectonic plates move away from each other. This process can occur in oceanic or continental crust.
Since new crust is constantly being added why does earth's surface not keep expanding?
Crust is made from recycling old crust so that there is still the same amount. The earth doesn't expand because there is a cycle that keeps the proportions the same throughout the entire cycle.
How do ocean trenches help explain why crust added at ocean ridges doesn't make earth any larger?
Ocean trenches were discovered as a sign of destructive plate margins. These plate margins cause oceanic crust to subduct below the continental crust at the oceanic-continental boundary, and force the oceanic crust to move down into the Earth's mantle and melt into basaltic magma. As this is happening, magma at oceanic ridges is creating new oceanic crust at the mid-oceanic ridges. Overall, these two processes cancel each other out and so the total amount of oceanic crust is staying aproximately the same. Therefore the Earth is not growing. Hope this helps :)
How does the movement of the old and the new crust move in seafloor spreading?
In seafloor spreading, the old crust moves away from the mid-ocean ridge as new crust forms through volcanic activity. This movement is driven by the process of mantle convection, where hotter and less dense material rises at the ridge, pushing the tectonic plates apart. As new crust forms at the ridge, it gradually moves away from the ridge as more magma is added, creating a conveyor belt-like system of crustal movement.
Where does new crust forms..?
New crust is formed at divergent boundaries. While an equal volume of new crust is forming the Earth still remains the same size.
How did new evidence support Hess's theory of seafloor spreading?
Umm Maybe by the way sea floor spreads apart along both sieds of a mid ocean ridge as new crust is added
According to the theory of sea floor spreading new rock is added to the plates at?
...at constructive plate margins / boundaries.hence the term contructive, new crust is "contructed" here.(and destructed at a destructive plate margin / boundary / subduction zone.)
