The Wadati-Benioff zone can extend to depths of approximately: MCQ with Answer and Explanation

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The Wadati-Benioff zone can extend to depths of approximately:

A. 250 km

B. 700 km

C. 1200 km

D. 100 km

Answer: Option B

Solution (By JKSSB Mock Tests)

Deep-focus earthquakes in subduction zones occur along the Wadati-Benioff zone, extending to about 700 km depth.

This question belongs to: Geography GK Physical Geography

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Which part of the Earth's mantle is semi-molten and allows tectonic plates to move?

A. Mesosphere

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Correct Answer: Option B

Explanation:
The asthenosphere is a semi-molten, plastic layer beneath the lithosphere. Tectonic plates float and move over this layer.

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Correct Answer: Option D

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The Challenger Deep in the Mariana Trench is over 11,000 meters deep.

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Which ecosystem has the highest biodiversity?

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Correct Answer: Option B

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Tropical rainforests contain the greatest variety of plant and animal species.

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