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Question
Give geographical reasons.
Our knowledge regarding the oceanic trenches is limited.
Solution
Our knowledge regarding the oceanic trenches is limited because -
- At places, deep, narrow, and steeply sloping depressions are found on the ocean floor. These are called ocean deeps of ocean trenches.
- Generally, the shallow ones are called deeps whereas deeper ones are called ocean trenches. The oceanic trenches are the deepest parts of the oceans.
- These trenches can be thousands of meters deep. For example, The Mariana Trench in the Pacific Ocean is around 11 km deep while the Java trench in the Indian Ocean is around 7.7 km deep.
- They generally occur along plate boundaries and are associated with active volcanoes and strong earthquakes.
- The knowledge of ocean trenches is limited because of their depth and their remoteness.
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