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Revision Notes
The Properties of Sea Water — Revision Notes
Maharashtra Board · Class 9 · Geography
The Properties of Sea Water revision notes for Maharashtra Board Class 9 Geography: 4 topics in quick points. Includes Temperature of Seawater, Salinity.
44 questions20 flashcards3 concepts
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Key Topics to Revise
1
Temperature of Seawater
- Surface temperature of seawater is not uniform everywhere and depends on various factors
- Latitudinally, temperature decreases from equatorial areas (25°C) to poles (2°C)
- Mid-latitude average temperature is around 16°C
2
Salinity of Seawater
- Salinity increases buoyancy of seawater, useful for water transport
- High salinity beyond limits destroys marine life
- Salinity is high where evaporation rate exceeds freshwater supply
3
Density of Seawater
- Density is controlled by temperature and salinity
- Lower temperature increases density (cold water is denser)
- Higher salinity increases density (saline water is denser)
4
Special Case Study - Dead Sea
- Located on Israel-Jordan border with salinity of 332‰
- Average ocean salinity is only 35‰
- Only River Jordan supplies freshwater
Get complete notes with diagrams and examples
Full NotesKey Concepts
Sea water temperature decreases from equatorSalinity is the amount of dissolvedDensity of sea water is controlled
Frequently Asked Questions
What are the important topics in The Properties of Sea Water for Maharashtra Board Class 9 Geography?
Key topics in The Properties of Sea Water include Temperature of Seawater, Salinity of Seawater, Density of Seawater, Special Case Study - Dead Sea. Study these first, then practise questions on each for Class 9 exams.
How should I revise The Properties of Sea Water for Class 9 exams?
Learn the core ideas first, then work through the 44 practice questions on The Properties of Sea Water. 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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