Apr 24,  · Your on the right track since oceanic plates are often associated with trenches, but the answer is A to be more specific since C only referrers to the sea (water). These trenches form on convergent plate boundaries and often involve at least one oceanic RealWizardRock.com: Open. Deep-Ocean Trenches. Long, narrow creases in the ocean floor which are the deepest part of the ocean. Many deep-ocean trenches exceed 10, meter in depth. *Trenches form at sites of plate convergence where one moving plate descends beneath another and plunges back into the mantle. Underwater volcanoes, trenches, and ridges form in the same manner that they form on land. Along tectonic plate boundaries, volcanoes are areas where magma rises and leaks from the crust.

Trenches form at sites where i can

Ocean Trenches. Two oceanic plates converging forming a trench between the plates, USGS Mariana Trench Trenches form in some areas when two oceanic plates converge forming a subduction zone. The Pacific Plate is subducting beneath the Mariana Plate forming Mariana Trench. The Pacific Plate is older and colder than the Mariana Plate. Trenches form at sites where A. the tops of undersea volcanoes collapse. B. one plate descends beneath another. C. erosion cuts into the continental shelf. D. two plates diverge under the sea. Apr 24,  · Your on the right track since oceanic plates are often associated with trenches, but the answer is A to be more specific since C only referrers to the sea (water). These trenches form on convergent plate boundaries and often involve at least one oceanic RealWizardRock.com: Open. Mar 04,  · Subduction is the most common way deep ocean trenches form, but some trenches can be formed via plate separation. Subduction: The process by which one tectonic plate goes under another plate, forming a trench at the meeting point. Plate Separation: . Deep-Ocean Trenches. Long, narrow creases in the ocean floor which are the deepest part of the ocean. Many deep-ocean trenches exceed 10, meter in depth. *Trenches form at sites of plate convergence where one moving plate descends beneath another and plunges back into the mantle.Trenches form natural boundaries between two tectonic plates. There are 20 major trenches on Earth and 17 of these trenches can be found around the Pacific. If the overriding plate is continental, a marginal trench forms where the topographic It can be classified as a marginal trench in the east but is more properly termed an Such interarc, or backarc, basins are sites of seafloor spreading directly. This bubbled-up magma is cooled by frigid seawater to form igneous rock. There is not an ocean trench at the East Pacific Rise, because the seafloor Oceanic crust slowly moves away from mid-ocean ridges and sites of seafloor Mid-ocean ridges and seafloor spreading can also influence sea levels. Some ocean trenches are formed by subduction between a plate former seafloor—can rise through volcanoes located near the trench. They will explore the Kermadec Trench at the bottom of the Pacific Ocean. purposes, sites along the trench axis and sites in the abyssal plain.

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