A large iceberg melts at the base, but not at the top, because of the reason that_________________?
Correct answer: B. Due to the high pressure at the base, its melting point reduces
- A. Ice at the base contains impurities which lowers its melting point
- B. Due to the high pressure at the base, its melting point reduces
- C. The iceberg remains in a warmer condition at the base
- D. All A, B. and C
Explanation
Pressure at the base lowers the melting point of ice because ice occupies more volume than liquid water. This permits melting at the high-pressure base, whereas the top remains unaffected by that pressure effect.
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