Question

How much percentage of earth's surface is constituted by ocean?

• A. 65%
• B. 71%
• C. 79%
• D. 81%

Hint:

Remember: Oceans = 71% of earth's surface, Land = 29%. The Pacific Ocean alone accounts for about one-third of total ocean area.

Answer 1

The Correct Option is B

Step 1: Total surface area of Earth.
The Earth's total surface area measures approximately 510 million square kilometers.

Step 2: Distribution of oceans and land.
- Oceans, comprising the Pacific, Atlantic, Indian, Arctic, and Southern oceans, cover approximately 71% of the Earth's surface. - The remaining 29% of the surface is land, consisting of continents and islands.

Step 3: Exclusion of incorrect percentages.
Figures of 65%, 79%, and 81% are inaccurate. The correct scientific percentage is 71%.

Final Answer: \[\boxed{\text{Oceans cover 71% of earth's surface.}}\]