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At constructive boundaries, magma from the earth's interior rises to the surface and forms mostly fissure volcanoes, but a few other tyopes as well, and forms new crust which pushes away older crust
At destructive boundaries, in a process called subduction, an oceanic plate slides into the earth's mantle, where it melts. The molten roick then rises to the surface and fornms a chain of volcanoes, mostly stratovolcanoes, but a few of other types as well
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Why do volcanoes occur at constructive plate margins and subduction zones?
Because the subducting plate is water saturated oceanic crust, and as it moves down into the mantle it vaporizes the water and forces steam upwards. At the same time, the descending plate causes friction and circulation, leading to pressure-release melting. All of these processes melt the upper mantle to form magma chambers and thus, volcanoes.
How does oceanic crust form at constructive plate margins?
Do you mean spreading centres or oceanic ridges, where the oceanic lithosphere is renewed by hot, less dense rock rising in convection zones.
Volcanoes form on what plate?
They form near plate boundaries.
How do volcanoes and volcanic islands form?
Volcanoes happen at 2 out of 4 plate boundaries: Constructive plate boundaries and destructive plate boundaries. In a constructive plate boundary, the plates move apart, causing earthquakes, and letting magma pass through, creating volcanoes. In a destructive plate boundary, the plates push together. This creates a subduction zone. The rock jolts and grinds its way down causing earthquakes and volcanoes.
What boudaries produces volcanoes?
Convergent boundaries produce volcanoes. Volcanoes form when an oceanic plate and a continental plate converge, causing the oceanic plate to subduct. The subduction causes a magma chamber to form which feeds the volcano when it erupts.
Why can volcanoes be constructive and a destructive?
Volcanoes can be constructive when they form islands and mid-ocean ridges
Why do volcanoes occur at constructive plate margins and subduction zones?
Because the subducting plate is water saturated oceanic crust, and as it moves down into the mantle it vaporizes the water and forces steam upwards. At the same time, the descending plate causes friction and circulation, leading to pressure-release melting. All of these processes melt the upper mantle to form magma chambers and thus, volcanoes.
What is the constructive uses of earthquake?
There are very few constructive uses for an earthquake. One use is that an earthquake allows plate margins to form, however the destruction clearly outweighs any advantages.
How does oceanic crust form at constructive plate margins?
Do you mean spreading centres or oceanic ridges, where the oceanic lithosphere is renewed by hot, less dense rock rising in convection zones.
Volcanoes form on what plate?
They form near plate boundaries.
What is a continental arc system?
These arc systems form at collision plate margins where an oceanic plate is being subducted under a continental plate. As the oceanic plate melts, the magma rises and finds cracks in the continental plate above and creates volcanoes. These volcanoes occur all the way along this plate margin. For example the cascade volcanic arc on the north west coast of USA.
What type of boundary plates produce volcanoes?
convergence plate boundary, where tectonic plates move towards each other and collide, leading to subduction zones which are highly constructive regions of volcanoes. Volcanoes also form at divergent plate boundaries. A good example being the numerous Icelandic volcanoes which have formed over he Mid Atlantic Ridge.
How do volcanoes and volcanic islands form?
Volcanoes happen at 2 out of 4 plate boundaries: Constructive plate boundaries and destructive plate boundaries. In a constructive plate boundary, the plates move apart, causing earthquakes, and letting magma pass through, creating volcanoes. In a destructive plate boundary, the plates push together. This creates a subduction zone. The rock jolts and grinds its way down causing earthquakes and volcanoes.
What are two Ways volcanoes Form near converging plate boundaries?
Volcanoes may form where two oceanic plates collide or where an oceanic plate collides with a continental plate.
Which type of plate margins commonly form valcanoes?
tectonic plates
What plate process causes volcanoes to form at their boundaries?
the plate of your mom
What boudaries produces volcanoes?
Convergent boundaries produce volcanoes. Volcanoes form when an oceanic plate and a continental plate converge, causing the oceanic plate to subduct. The subduction causes a magma chamber to form which feeds the volcano when it erupts.
