Chapter 12 of 31
Revision Notes
Circulation of Ocean water, waves, tides & Ocean currents — Revision Notes
Telangana Open School (TOSS) · Class 12 · Geography
Circulation of Ocean water, waves, tides & Ocean currents revision notes for Telangana Open School (TOSS) Class 12 Geography: 3 topics in quick points.
50 questions27 flashcards3 concepts
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Key Topics to Revise
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1. Waves
- Waves are formed when wind blows over the surface of the ocean, creating ripples that grow into waves.
- The main cause of ocean waves is wind, but underwater disturbances like earthquakes can cause tsunamis.
- Waves transmit energy across the ocean but do not move water forward over long distances.
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2. Tides
- Tides are the regular rise and fall of sea levels caused by the gravitational pull of the moon and sun.
- The moon has a stronger effect on tides than the sun because it is closer to Earth.
- There are two high tides and two low tides every 24 hours and 50 minutes — this is called a semi-diurnal tide cycle.
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3. Ocean Currents
- Ocean currents are large flows of water moving in specific directions across the oceans.
- Currents can be warm (from equator to poles) or cold (from poles to equator).
- Main factors causing ocean currents: wind, Coriolis effect, temperature, salinity, and shape of continents.
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Full NotesKey Concepts
Waves are ripples or ridgesTides are the regular riseOcean currents are large flows
Frequently Asked Questions
What are the important topics in Circulation of Ocean water, waves, tides & Ocean currents for Telangana Open School (TOSS) Class 12 Geography?
Key topics in Circulation of Ocean water, waves, tides & Ocean currents include Waves, Tides, Ocean Currents. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Circulation of Ocean water, waves, tides & Ocean currents for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 50 practice questions on Circulation of Ocean water, waves, tides & Ocean currents. 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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