A valley in the ocean created when one lithosphere plate subducts under another.
Understand the Problem
The question is asking for the identification of a geographical feature in the ocean that is formed by the subduction of one lithospheric plate under another. The possible answer choices are provided as options.
Answer
Deep-ocean Trench
The final answer is Deep-ocean Trench
Answer for screen readers
The final answer is Deep-ocean Trench
More Information
A deep-ocean trench is formed at subduction zones where one lithosphere plate sinks beneath another. These trenches are some of the deepest parts of the ocean.
Tips
A common mistake is confusing ridges and trenches. Ridges are caused by divergent boundaries, while trenches are the result of convergent subduction zones.
Sources
- What features form at plate tectonic boundaries? - oceanexplorer.noaa.gov
- Understanding plate motions [This Dynamic Earth, USGS] - pubs.usgs.gov
- Interactives . Dynamic Earth . Plates & Boundaries - learner.org
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