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Why do the most deep eath quarkes occur at convergent boundaries?
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Are divergent plate boundaries associated with folded mountains and deep sea trenches?
No. Sea floor trenches are found at convergent boundaries. divergen boundaries form mid-ocean ridges.
Where do ocean trenches occur?
At spreading centers.
What are three things that are happening at plate boundaries?
Three things occur where lithospheric plates meet and a name has been given to each type of interface:1) Divergent Boundaries occur in the ocean where magma from deep within the mantel rises to the rifts along oceanic ridges. The force of the rising lava flow pushes both plates away from the rift. once the lava cools, a new layer of oceanic crust is deposited along the ridge.2) Convergent Boundaries occur at the deep ocean trenches that lie along continents and island arcs. The plate lithosphere subducts underneath the overlying oceanic or continental crust. This subduction occurs for two reasons: One, because the divergent side of the plate is being pushed by magma upwellings. And two, because the plate is being pulled downward by gravity at the interface of the deep ocean trench. If plate subduction did not occur at convergent plate boundaries than the surface area of earth would gradually increase over time as new strips of oceanic crust are solidified at divergent boundaries.3) Transform Boundaries occur where two lithospheric plates move past each other with anti-parrallel paths. These boundaries can be found running perpendicular to oceanic ridges (divergent boundaries) in short segments.Take a look at Google Maps or Google Earth and find the ridge system that runs down the center of the Atlantic Ocean like the seam of a baseball. This "seam" is a Divergent boundary and volcanism occurs regularly as lava flows create new crust. You can also see the transform boundaries that run roughly perpendicular to the Mid-Atlantic ridge. If you now move all the way to the edge of japan that faces the pacific ocean you can see a convergent boundary. Notice the deep ocean trench where the Pacific plate is subducting underneath the Philippine and Eurasian plates.
Where do deep earthquakes occur?
treches. 300 km or below sea level.
What type of boundary creates deep sea trenches?
convergent
In what type of boundary do deep earthquakes occur in?
They occur at convergent boundaries where subduction is occurring.
Where do very deep large magnitude earthquakes occur?
At convergent boundaries where subduction is occurring.
Where do most deep-focus earthquakes occur?
At convergent plate boundaries where subduction is occurring.
Deep-focus earthquakes are associated with what plate boundaries?
destructive or convergent boundaries
Why do earthquakes occur at greater depths along convergent plate boundaries?
Convergent boundaries are boundaries where tectonic plates are moving together. Since the edges of both can't be in the same place, one plate will be forced under another plate (and the other above). The plate going 'down' will thus go deeper into the earth - allowing deeper earthquakes to occur.
Are divergent plate boundaries associated with folded mountains and deep sea trenches?
No. Sea floor trenches are found at convergent boundaries. divergen boundaries form mid-ocean ridges.
What does a convergant boundary form?
There are three types of convergent boundaries: Oceanic, continental, and continental-oceanic convergent boundaries. Continental-continental convergent boundaries form mountain ranges. Continental-oceanic boundaries result in subduction zones and the recycling of lithosphere. The continental side of the boundary may form a mountain range. Oceanic-oceanic form deep oceanic trenches and sometimes volcanoes.
Why do the most deep earthquakes occur at convergent boundries?
because so much pressure is produced
Collision boundaries and subduction boundaries are types of what boundaries?
The older denser plate sinks under a deep ocean trench into the mantle. Some rock above the subducting plate melts and forms magma. Since the magma is less dense than the surrounding rock, it rises toward the surface. Eventually, the magma breaks through the ocean floor, making a volcanoe.
Where do ocean trenches occur?
At spreading centers.
Where are deep oceanic trenches found?
Trenches occur at convergent boundaries when one tectonic plate which is more dense, is pushed beneath another tectonic plate that is less dense. This process is called subduction. Usually where divergent boundaries in the earth's crust are. When faults move apart, they create trenches.<-- no divergent boundaries in the ocean create mountain ridges not trenches http://upload.wikimedia.org/wikipedia/en/a/a4/SubZone.jpg
How is the creation of deep sea trenches similar to the stimulation of volcanic activity?
They both occur along plate boundaries.
