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Why does no one have an answer to what stress causes divergent boundaries?
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∙ 12y ago
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Why do you find volcanoes at convergent and divergent boundaries but not at transform boundaries?
Convergent and divergent boundaries melt rock in the upper mantle while transform boundaries do not. Convergent boundaries that involve at least one oceanic plate form subduction zones, where an oceanic plate plunges into the mantle. Volatiles carried into the mantle lower the melting point of the rock there, allowing magma to form.At divergent boundaries the crust becomes thinner. This reduces pressure on the upper mantle, thus lowering melting points and generating magma.Transform boundaries have no such means of producing magma.
What is one name of a divergent plate boundary that there are?
Divergent plate boundaries occur where two plates are moving away from each other, and "new ground" is being formed. The oceans all have divegent boundaries at the mid-oceanic ridges. Another one is in eastern Africa in what is known as the Great Rift Valley. This will someday split the African continent apart.
Where does new sea floor form?
It forms at the edges of Divergent Tectonic Plates; as opposed to the Earthquakes that are found at the Convergent Plate Boundaries [where one Plate subsides beneath the other Plate].
What causes a rift valley to form at divergent boundaries?
When plates diverge, the crust in between them is pulled thin. This tension creates a rift valley, such as the one found between the two islands of New Zealand. Over time, the stretched crust with grow so thin that rising magma will break its surface, forming an underwater ridge.
How is volcanic activity associated with plate boundaries?
90% of volcanic activity on earth occurs at either convergent or divergent plate boundaries. The remaining 10% occurs at hot spots, which are not associated with plate boundaries.
What type of plate boundary causes shear stresses?
Shearing stress is one of three kinds of stresses. Compressional and tensional are the others. Shearing stress is associated with transform. The other two kinds of plate boundaries are convergent and divergent.
How are the movement of plates at divergent boundaries and at the transform boundaries similar?
The difference between transform and divergent boundaries is that transform boundaries occur when tectonic plates slide past each other, whereas at divergent boundaries they move away from each other. However in both cases the plates move horizontally (unlike at convergent boundaries where one plate may be pushed underneath another).
Plates move apart at what boundary?
divergent
What forms mid-ocean valleys?
Divergent, one of the three Plate boundaries.
Where are rift boundaries formed at and what happens at them?
A rift boundary is a divergent boundary, where two plates of the earth's crust are moving away from each other. Divergent boundaries occur at mid-oceanic ridges on the sea floor, but usually the term rift is used to describe divergent boundaries on the land. The best known one is in eastern Africa.
Which plate boundaries volcanoes are found along?
Volcanoes typically occur at two different types of plate boundaries. These two plate boundaries are: the diverging plate boundary where plates separate, and the converging plate boundaries where one plate is beneath another one at subduction zones.
Why are most volcanoes located near a fault?
Most volcanoes form at either convergent or divergent plate boundaries. Volcanoes at convergent plate boundaries form when one plate slides under another, taking seawater with it. This causes the rock in the mantle to melt as the melting point drops. This new magma can rise to form volcanoes.At divergent plate boundaries the crust is thing, which lowers pressure on the mantle, causing some material to melt.
What are the 3 types of plate boundarys?
divergent plate boundary- a boundary where two plates move apart from each other. convergent plate boundary- a boundary where two plates move towards each other so that one plate can sink beneath the other. transform plate boundary- a boundary where one plate slips along side another plate.
Why do you find volcanoes at convergent and divergent boundaries but not at transform boundaries?
Convergent and divergent boundaries melt rock in the upper mantle while transform boundaries do not. Convergent boundaries that involve at least one oceanic plate form subduction zones, where an oceanic plate plunges into the mantle. Volatiles carried into the mantle lower the melting point of the rock there, allowing magma to form.At divergent boundaries the crust becomes thinner. This reduces pressure on the upper mantle, thus lowering melting points and generating magma.Transform boundaries have no such means of producing magma.
What is it called when 2 plates move away from each other?
mid - ocean ridges, they're caused by divergent boundaries Rifts are also on land, such as the Great Rift Valley in Africa mid - ocean ridges, they're caused by divergent boundaries Rifts are also on land, such as the Great Rift Valley in Africa mid - ocean ridges, they're caused by divergent boundaries Rifts are also on land, such as the Great Rift Valley in Africa
What are the types of divergent boundaries?
The 3 general types are constructive, destructive, and conservative boundaries. Constructive (divergent) - plates move away from each other, typically creating a rift Destructive (convergent) - one plate will be subducted, or continental plates collide Conservative (transform) - plates grind past each other, stalling and slipping
In which location would an ocean ridge?
The mid-ocean ridge is almost in all of the oceans
