Category 10 · Geography
Ocean Relief, Oceans and Seas
7 micro topics in Geography for UPSC Prelims, in book order: Major Ocean Relief Features; Minor Ocean Relief Features; and 5 more.
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10.1
Major Ocean Relief Features
The ocean floor has four major divisions: the continental shelf, the continental slope, the deep sea plain or abyssal plain, and the ocean deeps or trenches. The shelf is the gently sloping extension of the continent…
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10.2
Minor Ocean Relief Features
The minor relief features of the ocean floor include mid-oceanic ridges, seamounts, guyots, submarine canyons, oceanic plateaus, atolls, sills, fracture zones and island arcs. Mid-oceanic ridges form where plates diverge, seamounts and guyots are submerged volcanoes,…
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10.3
The Pacific Ocean
The Pacific Ocean is the largest and deepest ocean, covering about 165 million square kilometres, nearly half of the world's ocean area and about a third of the Earth's surface. It stretches from the Arctic to…
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10.4
The Atlantic Ocean
The Atlantic Ocean is the second largest ocean, covering about 106 million square kilometres, S-shaped and lying between the Americas and Europe-Africa. Its central Mid-Atlantic Ridge divides it into two basins. It has an irregular coastline…
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10.5
The Indian Ocean
The Indian Ocean is the third largest ocean, covering about 70.6 million square kilometres, and is the only major ocean named after a country. It is closed in the north by the Asian landmass, which makes…
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10.6
Marginal Seas
A marginal sea is a part of an ocean that is partly enclosed by land, islands or island arcs and lies on the continental shelf, such as the East China Sea or the Arabian Sea. Mediterranean…
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10.7
Bays, Gulfs, Straits and Isthmuses
A bay or gulf is a part of the sea that cuts into the land, a strait is a narrow water passage joining two larger water bodies and separating two land masses, a channel is a…
Frequently asked questions
Which topics are in Ocean Relief, Oceans and Seas?
Ocean Relief, Oceans and Seas has 7 micro topics in Geography: Major Ocean Relief Features; Minor Ocean Relief Features; The Pacific Ocean; The Atlantic Ocean; The Indian Ocean; Marginal Seas; Bays, Gulfs, Straits and Isthmuses.
Is Ocean Relief, Oceans and Seas important for UPSC Prelims?
Ocean Relief, Oceans and Seas is a part of the UPSC Prelims Geography syllabus map on MaargX UPSC. Each of its 7 published topics has key terms, a Mains angle and practice questions.