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प्रश्न
Give geographical reasons.
Our knowledge regarding the oceanic trenches is limited.
उत्तर
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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संबंधित प्रश्न
Identify the correct correlation:
A: Assertion; R: Reasoning
A: More deposition occurs in the continental slope.
R: The slope is steeper here.
Identify the correct correlation :
A: Assertion; R: Reasoning
A: The islands are actually peaks of submerged mountains.
R: Some peaks of submerged mountains come above the sea level.
Identify the correct correlation:
A: Assertion; R: Reasoning
A: The abyssal plains are the deepest parts of the ocean
R: They lie at the bottom of the ocean
Give a geographical reason.
Fishing has developed on continental shelves.
Answer in detail:
There is a similarity in the relief on the land surface and the ocean bottom.
