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The tectonic plates, oceanic-to-oceanic convergent boundaries or oceanic-continental convergent boundaries create the ocean trenches. One of the plates that is denser than the other is pushed downwards into the mantle of the Earth by the lighter, and less dense plate. This creates the trench due to the downward motion of the plate. The denser plate's gravity will pull the rest of the plate down with it with time.
Divergent Boundaries underwater is only present at oceanic ridges. This creates the seafloor spreading. The hot magma that may be in an area pushes the older rocks (part of the plate) away from each other, causing a spreading motion.
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Movement of tectonic plates is not caused by?
Ocean Current.
What was discovered that led to the knowledge that tectonic plates exist?
Mid-ocean ridges and trenches
What is the name of tectonic geologic area of unstable tectonic plates that loops around the pacific ocean and includes japan?
Trenches define one of the most important natural boundaries on the Earth's solid surface: the one between two lithospheric plates.
Where do ocean trenches occur?
At spreading centers.
What is a volcanic and tectonic?
Type your answer ... The crust of our planet is cracked into seven large and many other smaller slabs of rock called plates, averaging about 50 miles thick. As they move (only inches per year), and depending on the direction of that movement, they collide, forming deep ocean trenches, mountains, volcanoes, and generating earthquakes.
What do ocean trenches result from?
Movement of the tectonic plates.
What make trenches in the ocean?
Deep ocean trenches can be formed by undersea earthquakes, land-slides, but also by the movement along the edges of tectonic plates.
How deep trenches are formed?
Deep-ocean trenches are formed where seafloor tectonic plates subduct under continental plates.
Where can you find ocean trenches?
Ocean trenches are the deepest parts of the ocean. They border continents or island arcs where tectonic plates come together.
How Ar ocean trenches formed?
They form by erosion, either from under water volcanos or the currents that constantly move the water. The point is they both cause trenches, also oceanic plate movement.
Deep ocean trenches are evidence for?
Deep ocean trenches are typically the evidence of the collision of tectonic plates. This collision is often known as subduction.
Movement of tectonic plates is not caused by?
Ocean Current.
What was discovered that led to the knowledge that tectonic plates exist?
Mid-ocean ridges and trenches
Im the gap that forms as tectonic plates move apart?
Oceanic trenches are the gaps which form when the tectonic plates move apart. They are the very deepest parts of the ocean.
What other ocean floor feature is formed by movement of Earth's plates?
what other ocean floor feature is fromed by movement of earth's plates
Do oceanic plates move?
the ocean plates move because of the movement of the the tectonic plates beneath the ocean and do to the motion of the oceans currents.
Why does an ocean trench occur?
oceanic trenches occur where tectonic plates collide and one is pushed underneath the other.
