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Physical Quantities and Measurement — PHYSICS STD 8 — Question

ICSE BoardEnglish MediumSTD 8PHYSICSPhysical Quantities and Measurement2 Marks
Question
Icebergs floating on sea water are dangerous for ships. Explain the reason.
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Answer

Icebergs are huge masses of ice floating in the sea $[$density of ice being $0.917 g Cm^{-3}]$ with about $9/10$ portion of ice below seawater and only $1/10$ portion of it above. Since such a large portion of the iceberg is submerged underwater it becomes difficult for the sailor to estimate the size of the iceberg increasing the danger of the ship colliding in them.

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