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Q120 (IAS/2005) Geography › World Physical Geography › Ocean water properties Answer Verified

Consider the following statements: (1) Total land area of earth is approximately 1475 lakh square kilometers. (2) Ratio of land area to water area of earth is approximately 1.4 (3) Maximum percentage of earth’s water is in the Pacific Ocean. Which of the statements given above is are correct?

Result
Your answer: —  ·  Correct: A
Explanation

Statement (1) is essentially correct: common sources give Earth's land area near 147–149 million km2 (about 1,475 lakh km2), cited here as ~148,226,000 km2, supporting the 1475 lakh figure as an approximation. Statement (2) is incorrect: the land:water distribution on Earth is roughly 29:71 (land:water ≈ 1:2.4–1:3), so a land-to-water ratio of 1.4 is not supported; some references state about 1:3. Statement (3) is correct: the Pacific Ocean is the largest ocean and contains the greatest share of the world’s ocean water (it alone covers over 30% of Earth’s surface and holds the largest ocean volume); oceans collectively contain ~97% of Earth’s water [1].

Sources

  1. [1] https://oceanservice.noaa.gov/facts/oceanwater.html
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