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Chapter 10 of 31
Syllabus

Ocean & Submarine relief — Syllabus

Telangana Open School (TOSS) · Class 12 · Geography

What Ocean & Submarine relief covers in Telangana Open School (TOSS) Class 12 Geography: 3 topics, for the 2026-27 session.

45 questions25 flashcards5 concepts

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3 Topics · Telangana Open School (TOSS) Class 12 Geography · 2026-27

Topics in Ocean & Submarine relief

1

Ocean Basins

  • There are five major oceans: Pacific, Atlantic, Indian, Antarctic (Southern), and Arctic Oceans.
  • The Pacific Ocean is the largest and deepest, covering about 46.6% of the ocean area.
  • Oceans are interconnected and form a continuous body of water around the globe.
2

Major Submarine Relief Features

  • Continental Shelf: Gently sloping, shallow part of the continent submerged under seawater, up to 200 m deep.
  • Continental Slope: Steep slope connecting the shelf to the deep ocean floor, depth from 200–2000 m.
  • Abyssal Plain: Vast, flat, deep-sea floor between 2000–6000 m, covered with fine sediments.
3

Minor Submarine Relief Features

  • Mid-Oceanic Ridges: Underwater mountain ranges formed at divergent plate boundaries.
  • Seamounts: Volcanic mountains rising from the ocean floor but not reaching the surface.
  • Guyots: Flat-topped seamounts eroded by waves and submerged.

Key Concepts

Central concept: Ocean and Submarine Relief

Ocean BasinsSubmarine Relief FeaturesFormation and Significance

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Frequently Asked Questions

What are the important topics in Ocean & Submarine relief for Telangana Open School (TOSS) Class 12 Geography?
Key topics in Ocean & Submarine relief include Ocean Basins, Major Submarine Relief Features, Minor Submarine Relief Features. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Ocean & Submarine relief for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Ocean & Submarine relief. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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