How are mid-ocean ridges and trenches different?

How are mid-ocean ridges and trenches different?

Mid ocean ridge are where new crustal material is forced to the surface. The new crustal material is pushed apart forming two different plates moving in two different directions. An ocean trench is where old crustal material is pushed under another plate where it is melted and turned into magma.

How do ridges and trenches differ?

Trench: very deep, elongated cavity bordering a continent or an island arc; it forms when one tectonic plate slides beneath another. Ridge: underwater mountain range that criss-crosses the oceans and is formed by rising magma in a zone where two plates are moving apart.

What is the difference between mid-ocean ridges and trenches quizlet?

What is the difference between mid-ocean ridges and trenches? Mid-ocean ridges occur at divergent plate boundaries. Trenches occur at convergent plate boundaries. The deep trenches occur where one plate is being subducted under another.

How are mid-ocean ridges and deep trenches formed?

Trenches are formed by subduction, a geophysical process in which two or more of Earth’s tectonic plates converge and the older, denser plate is pushed beneath the lighter plate and deep into the mantle, causing the seafloor and outermost crust (the lithosphere) to bend and form a steep, V-shaped depression.

What is the relationship between the oceanic ridges and the trenches?

Hot material rises at mid-ocean ridges and sinks at deep sea trenches, which keeps the plates moving along the Earth’s surface.

What kind of boundary do mid-ocean ridges form at?

divergent plate boundaries
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.

Do trenches form at mid-ocean ridges?

Rapidly spreading ridges have a much more gentle slopes. The Mid-Atlantic Ridge, for instance, is a slow spreading center. It spreads 2-5 centimeters (. 8-2 inches) every year and forms an ocean trench about the size of the Grand Canyon.

What is the difference between an ocean trench and a mid ocean ridge?

The new crustal material is pushed apart forming two different plates moving in two different directions. An ocean trench is where old crustal material is pushed under another plate where it is melted and turned into magma. The sediments near a mid ocean ridge on the youngest sedimentary layer.

How are the ocean ridges formed and how are they formed?

The Ocean Ridges are submarine mountain chain formed by plate tectonics. In other words, it is an underwater longest mountain range in the world. It demarcates the boundary between two plates. It is a divergent zone where Ocean plates are born, spreading apart from the central valley, or axial trough.

How are subduction zones and oceanic trenches related?

The heavier plate sinks into or converges into the mantle. A depression is formed along the converging ridge of the plates. These depressions are called oceanic trenches. The subduction zones and the activities resulting from it are the cause of formation of oceanic trenches.

Why are mid ocean ridges not deep canyons?

Because mid-ocean ridges are places where tectonic plates are pulling apart, you might expect to find an incredibly deep canyon, but that’s not exactly the case. As the tectonic plates pull apart, molten rock, or magma, comes up from below to fill in the gaps.

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