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Ocean & Submarine relief

Telangana Open School (TOSS) · Class 12 · Geography

Quick revision notes for Ocean & Submarine relief — Telangana Open School (TOSS) Class 12 Geography. Key concepts, formulas, and definitions for last-minute revision.

45 questions25 flashcards5 concepts

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Key Topics to Revise

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.

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Full Notes

Key Concepts

Ocean basins are largeThe continental shelf is the gentlyThe continental slope is the steepThe abyssal plain is a flatOceanic deeps

Frequently Asked Questions

What are the important topics in Ocean & Submarine relief for Telangana Open School (TOSS) Class 12 Geography?
Ocean & Submarine relief covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Ocean & Submarine relief — Telangana Open School (TOSS) Class 12 Geography?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and 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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