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Gurmeet Singh posted an Question
August 23, 2020 • 02:45 am 30 points
  • IIT JAM
  • Geology (GG)

Sir in the given question, they are saying the roots are not larger than peaks, i think this is wrong statement. roots are much larger than peaks

Question: 32/60 IIT JAM GG USP (1-15) 2019 Isostasy has been compared to ice floating in water, but mountain peaks are not like "tips of the iceberg" in relation to their "roots". In other words, "roots" are not that much larger than their peaks. This fact suggests that: (A) floating ice is an in

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    Sajan sarthak best-answer

    Yes roots are really large in length than that of. height above the average crustal thickness. Here the statement is "not that much larger" indicates that crustal roots are not 9 times larger, means it is larger but not that much as in case of icebergs as we know ice has one part visible while 9 parts below the water surface.

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    Rahul kumar Best Answer

    As you know that roots of iceberg is nearly 9 times larger than that of ice floating above water. Here the statement is "not that much larger" indicates that crustal roots are not 9 times larger, means it is larger but not that much as in case of icebergs. Since density contrast between crust and mantle is not very high the roots will also be small as in comparison with ice and water where density contrast is high. Try to understand the difference between "not that much larger" (in comparison with that of ice and water) and "not larger".

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