Question

How is a valley similar to an ocean trench?

Answer 1

Answer:

A rift valley is elongate depression that develops at a divergent plate boundary (ie. ... A trench is a long, narrow, steep-sided depression of the seafloor formed where a sub ducting oceanic plate sinks into the mantle causing the seafloor to bend downward like a flexed diving board(Earth, pg316).

Answer 2

Both valleys and ocean trench are giant holes in the ground.

• A valley is a long, low area that frequently stretches between hills or mountains. It usually has a river or stream that flows from one end to the other.
• The majority of valleys are created by rivers or streams eroding the land's surface over a very lengthy period of time. Some valleys are created by glacial ice erosion. In valleys in high mountainous or arctic regions, these glaciers might still exist.
• These glacially produced valleys may have been constructed or enlarged during ice ages at lower latitudes and elevations, but they are presently ice-free and filled with streams or rivers.
• Valleys in arid regions may be completely dry or only sometimes carry a river.
• The peculiar plate tectonics of the Earth includes oceanic trenches. They identify the locations of convergent plate boundaries, along which lithospheric plates are moving toward one another at velocities ranging from a few millimetres to more than ten centimetres per year.
• On average, the oceanic lithosphere enters trenches at a pace of 3 km2/year. The point where the bent, subducting slab starts to fall beneath another lithospheric slab is marked by a trench.
• In general, trenches are parallel to and 200 km (120 mi) away from a volcanic arc.

Hence, both valleys and ocean trenches are formed by some disturbances in nature.

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