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Revision Notes

Submarine Reliefs

ICSE · Class 11 · Geography

Quick revision notes for Submarine Reliefs — ICSE Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

65 questions43 flashcards5 concepts

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Key Topics to Revise

1

1. Basic Ideas and Major Divisions of the Ocean Floor

  • About 71% of the earth's surface is covered by water.
  • Earth is the only planet in the solar system with such a large quantity of water.
  • Earth is called the Watery Planet by many scholars.
2

2. Continental Shelf, Slope, Rise and Abyssal Plain

  • The continental shelf is a slightly inclined, inundated zone that forms the border of a continent.
  • Its slope is less than 1° and its maximum depth is normally 200 metres.
  • The continental shelf is almost absent in the eastern Pacific, especially near South America.
3

3. Submarine Ridges, Hills, Seamounts and Guyots

  • Submarine ridges are underwater mountain ranges a few hundred kilometres wide and several thousand kilometres long.
  • They form the longest mountain system on earth.
  • Most ridges are placed centrally in the oceans.
4

4. Submarine Trenches and Canyons

  • A trench is a long, narrow and steep-sided depression on the ocean floor.
  • Trenches are the deepest parts of the ocean bottom with a usual depth of 5,500 metres.
  • The deepest trench of the world is the Mariana Trench of the Guam Islands.

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Full Notes

Key Concepts

A slightly inclinedThe steep seaward slope atA gentle slope beyond the continentalA deepThese are underwater mountain ranges

Frequently Asked Questions

What are the important topics in Submarine Reliefs for ICSE Class 11 Geography?
Submarine Reliefs covers several key topics that are frequently asked in ICSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Submarine Reliefs — ICSE Class 11 Geography?
Understand the core concepts first, then work through the 65 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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