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Revision Notes

Ocean Water Movements — Revision Notes

ICSE · Class 11 · Geography

Ocean Water Movements revision notes for ICSE Class 11 Geography: 4 topics in quick points. Part of the ICSE Class 11 Geography syllabus.

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.
4

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?
Key topics in Ocean Water Movements include Main Movements of Ocean Water, Ocean Waves, Ocean Currents, Important Ocean Currents and Their Effects. Study these first, then practise questions on each for Class 11 exams.
How should I revise Ocean Water Movements for Class 11 exams?
Learn the core ideas first, then work through the 64 practice questions on Ocean Water Movements. 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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