Oceans and Continents

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Oceans are the largest water bodies on Earth. They cover almost three-fourths of the Earth's surface, which is why Earth appears blue from space and is called the 'blue planet'.

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A continent is a large continuous expanse of land. A large body of land is called a 'landmass', but when it forms a large continuous area, it is specifically called a continent.

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The five oceans are: 1. Pacific Ocean (largest), 2. Atlantic Ocean (second largest), 3. Indian Ocean (third largest), 4. Southern (or Antarctic) Ocean (fourth), 5. Arctic Ocean (smallest).

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From largest to smallest: 1. Asia, 2. Africa, 3. North America, 4. South America, 5. Antarctica, 6. Europe, 7. Australia (smallest continent).

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The Southern Hemisphere has more water than the Northern Hemisphere. Oceans and continents are not distributed equally between the two hemispheres.

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The Arabian Sea is to the west of India, and the Bay of Bengal is to the east of India. Both are parts of the Indian Ocean.

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An island is a piece of land that is completely surrounded by water on all sides. Islands are smaller than continents. There are lakhs of islands on Earth of different sizes.

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India's two major groups of islands are: 1. Andaman and Nicobar Islands in the Bay of Bengal, 2. Lakshadweep Islands in the Arabian Sea. India has more than 1,300 small islands in total.