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Revision Notes

Ocean Water Movements

ICSE · Class 11 · Geography

Quick revision notes for Ocean Water Movements — ICSE Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

64 questions40 flashcards5 concepts

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Key Topics to Revise

1

1. Main Movements of Ocean Water

  • Ocean water moves in three ways: waves, currents, and tides.
  • Waves are oscillatory movements in water and only the wave travels forward; water particles mainly move up and down and to and fro.
  • Currents are regular movements of a mass of water in a fairly definite direction over great distances.
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2. Ocean Waves

  • Waves are caused mainly by the friction and pressure of winds on the sea surface.
  • The size and force of waves depend on wind velocity, duration of wind, and fetch.
  • A fetch is the distance over which wind blows unhindered.
3

3. Ocean Currents

  • Ocean currents are regular movements of water in a fairly definite direction over great distances.
  • Water in a current moves forward, unlike water in waves.
  • Currents are deep and permanent.
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4. Important Ocean Currents and Their Effects

  • Kuro Shio is a warm current formed when the North Equatorial Current turns north along the coasts of Taiwan and Japan after reaching the Philippine Islands.
  • Oya Shio is a cold current starting from the Bering Strait and flowing south along the east coast of the Kamchatka Peninsula.
  • The Oya Shio finally merges with and sinks beneath the warmer Kuro Shio water.

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Full Notes

Key Concepts

Ocean waves are oscillatory movementsThe upper part of a waveVelocity of wave (C) = WavelengthSea is an irregular wave patternOcean currents are regular movements

Frequently Asked Questions

What are the important topics in Ocean Water Movements for ICSE Class 11 Geography?
Ocean Water Movements 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 Ocean Water Movements — ICSE Class 11 Geography?
Understand the core concepts first, then work through the 64 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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