📘 Geography Optional – Paper I
Page 6 – Pressure Belts, Planetary Winds & Jet Streams
Q1. Explain the distribution of pressure belts on Earth. (15 Marks)
- Equatorial Low Pressure Belt (ITCZ)
- Subtropical High Pressure Belt
- Subpolar Low Pressure Belt
- Polar High Pressure Belt
These belts shift seasonally due to apparent movement of the Sun.
Q2. Describe the mechanism of Trade Winds. (10 Marks)
- Blow from Subtropical High to Equatorial Low
- Deflected by Coriolis force
- NE Trades (Northern Hemisphere)
- SE Trades (Southern Hemisphere)
Q3. What are Westerlies? Explain their importance. (10 Marks)
- Blow from Subtropical High to Subpolar Low
- Responsible for temperate cyclones
- Influence European climate
Q4. Discuss the Polar Winds and their characteristics. (10 Marks)
- Cold and dry winds
- Blow from Polar High to Subpolar Low
- Meet Westerlies at Polar Front
Q5. Explain the concept of ITCZ. (15 Marks)
- Inter-Tropical Convergence Zone
- Zone of convergence of Trade Winds
- Heavy rainfall region
- Shifts north & south seasonally
Q6. What are Jet Streams? Explain their types. (15 Marks)
- High altitude narrow air currents
- Subtropical Jet Stream
- Polar Front Jet Stream
- Tropical Easterly Jet
Q7. Explain the role of Jet Streams in Indian Monsoon. (15 Marks)
- Withdrawal of Subtropical Jet
- Formation of Tropical Easterly Jet
- Monsoon onset mechanism
Q8. Differentiate between Local and Planetary Winds. (10 Marks)
| Local Winds | Planetary Winds |
|---|---|
| Limited area | Global scale |
| Example: Loo | Trade Winds |
Q9. Explain Coriolis Force and its effects. (10 Marks)
- Due to Earth’s rotation
- Right deflection (Northern Hemisphere)
- Left deflection (Southern Hemisphere)
Q10. Discuss the importance of atmospheric circulation in global climate. (15 Marks)
- Heat redistribution
- Ocean current influence
- Storm systems
- Climate zones formation
📊 Page 6 Complete | Total Questions So Far: 60 / 1000
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