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Chapter 18 of 20
Chapter Summary

Water (Oceans)

CBSE · Class 11 · Geography

Summary of Water (Oceans) for CBSE Class 11 Geography. Key concepts, important points, and chapter overview.

67 questions80 flashcards5 concepts

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Overview

Water is a vital component of life and a rare commodity in the solar system. Earth has abundant surface water, so it is called the Blue Planet. The chapter explains how water moves through the hydrological cycle, how oceans are divided and shaped, and how ocean water differs in temperature and salin

Key Concepts

The hydrological cycle is the continuous

The hydrological cycle is the continuous movement of water on, in, and above the Earth through evaporation, condensation, precipitation, runoff, infil

About 91% of planetary water

About 91% of planetary water is found in the oceans, while the rest occurs in glaciers, groundwater, lakes, soil moisture, the atmosphere, streams, an

The ocean floor has four major

The ocean floor has four major divisions: continental shelf, continental slope, deep sea plain, and oceanic deeps.

The continental shelf is the shallowest

The continental shelf is the shallowest part of the ocean floor, with an average gradient of 1° or less, an average width of about 80 km, and depth ra

The continental slope connects the shelf

The continental slope connects the shelf to the ocean basin. Its gradient varies between 2 and 5°, and its depth ranges from 200 m to 3,000 m. Canyons

Learning Objectives

  • Understand the hydrological cycle and the global distribution of water.
  • Identify the major divisions of the ocean floor and their characteristics.
  • Differentiate between major and minor relief features of the ocean floor.
  • Explain how temperature varies horizontally and vertically in ocean water.
  • Explain salinity, its measurement, and the factors that affect it.

Frequently Asked Questions

What are the important topics in Water (Oceans) for CBSE Class 11 Geography?
Water (Oceans) covers several key topics that are frequently asked in CBSE 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 Water (Oceans) — CBSE Class 11 Geography?
Understand the core concepts first, then work through the 67 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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