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They are formed at destructive plate boundaries where one plates subducts under another. The deep sea trench marks the point at which the denser plate ( or faster plate when it is oceanic vs. oceanic) begins to subduct the lighter one. They are very long, narrow and steep-sided How_are_deep_sea_trenches_are_formedin the ocean floor.
In a World War I context, trenches were primarily made with hand-tools by infantrymen on either side of the conflict. Infrequently, natural ravines or terrain-dips, as well as craters resulting from cannon-fire or other causes, were made use of in the formation of a trench line.
To create a trench, the soldiers must go through the following steps; # Dig a rectangular hole in the ground, about three to four feet in width, stretching as long as needed in length. # Place duckboards (flat pieces of wood) along the bottom of the trench. This was done to try to keep the soldiers feet dry. # Place sandbags along the top of the trench (this was known as the parapet). # In the space between the trenches, places tangles and rolls of barbed wire to slow an enemy's advance toward your fortress. Many trenches were equipped with machine gun posts, and in some cases underground caves.
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What are continental trenches?
coninental trenches are trenches that go across countries...i think
Why do passive margins have no trenches?
Trenches are caused by plate movement.
What was the reserve trenches like?
Reserve trenches
What was a periscope used for in World War 1?
An early form of the periscope was used to see over the tops of the trenches.
When was In the Trenches created?
In the Trenches was created on 2007-01-30.
How is the formation of mid-ocean ridges and trenches different?
Mid-ocean ridges form at divergent boundaries where tectonic plates are moving apart, allowing magma to rise from the mantle and create new oceanic crust. Trenches form at convergent boundaries where one plate subducts beneath another, creating deep oceanic trenches due to the sinking of the denser plate back into the mantle.
What are valleys between the ridges on the ocean floor?
They are called oceanic trenches.
How do you contrast mid-ocean ridges and trenches?
Mid-ocean ridges are the birthplace of oceanic crust. Trenches represent the destruction and burial of oceanic crust. They are at opposite ends of the Earth's convection currents that move through the asthenosphere.
What are 2 geological features that can occur at plate boundaries?
Two geological features that can occur at plate boundaries are mountain ranges, formed from the collision of two plates, and deep ocean trenches, formed at subduction zones where one plate is forced beneath another.
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 physical feature occures along ocean trenches and ridges?
The physical feature that occurs along ocean trenches and ridges is seafloor spreading. This process is when new oceanic crust is formed at mid-ocean ridges through volcanic activity, pushing the older crust away from the ridge towards ocean trenches where it is eventually subducted back into the mantle.
How do ocean ridges and deep-sea trenches support the theory of sea floor spreading?
Ocean ridges and deep-sea trenches support the theory of sea floor spreading through the process of plate tectonics. At ocean ridges, new oceanic crust is formed as magma rises and solidifies, pushing the existing crust apart. Deep-sea trenches are areas where old oceanic crust is being subducted back into the mantle, completing the cycle of sea floor spreading. This continuous movement of crust at ridges and trenches provides evidence for the theory of sea floor spreading and the movement of tectonic plates.
Does theory continental drift state that new ocean crust is formed at ocean ridges and destroyed at deep sea trenches?
No, the theory is that Seafloor spreading state that the new ocean crust is formed at ocean ridges and is destroyed at deep sea trenches.
Are maps made from sonar and magnetometer data led to the discovery of ocean ridges and deep-sea trenches?
Yes, sonar and magnetometer data have been instrumental in the discovery of ocean ridges and deep-sea trenches. Sonar data is used to map the sea floor topography, revealing ocean ridges, while magnetometer data helps identify variations in the Earth's magnetic field caused by stripes of rock on the ocean floor, contributing to understanding plate tectonics and the formation of deep-sea trenches.
How is the formation of mid ocean ridges and trenches different?
Stop trying to cheat on ur homework
What is the plural form of trench?
The plural form of "trench" is "trenches."
Is subduction occuring at ridges or trenches?
Subduction occurs at trenches where one tectonic plate is forced underneath another plate. Ridges, on the other hand, are locations where tectonic plates are moving apart and new crust is being created.
