📘 Geography Optional – Paper I
Page 9 – Ocean Currents, Tides & Waves
Q1. Explain the causes of Ocean Currents. (15 Marks)
- Planetary winds
- Earth’s rotation (Coriolis force)
- Temperature & salinity differences
- Configuration of continents
Q2. Describe the major ocean currents of the world. (15 Marks)
- Gulf Stream
- Labrador Current
- Kuroshio Current
- Canary Current
- Benguela Current
Q3. Discuss the impact of Ocean Currents on climate. (10 Marks)
- Moderate coastal temperatures
- Cause fog (warm + cold meeting)
- Influence rainfall patterns
Q4. Explain El Niño and La Niña phenomena. (15 Marks)
- El Niño – Warm current in Pacific
- La Niña – Cold phase
- Impact on Indian Monsoon
- Global climatic disturbances
Q5. What are Tides? Explain their types. (15 Marks)
- High tide & Low tide
- Spring tide
- Neap tide
- Diurnal & Semi-diurnal tides
Q6. Discuss the causes of Tides. (10 Marks)
- Gravitational pull of Moon
- Gravitational pull of Sun
- Centrifugal force
Q7. Differentiate between Waves and Tides. (10 Marks)
| Waves | Tides |
|---|---|
| Caused by wind | Caused by gravity |
| Short period | Regular periodic rise & fall |
Q8. Explain Tsunami and its causes. (10 Marks)
- Undersea earthquakes
- Volcanic eruptions
- Submarine landslides
Q9. Discuss the importance of ocean currents in marine productivity. (10 Marks)
- Upwelling zones
- Nutrient supply
- Rich fishing grounds
Q10. Evaluate the role of oceans in global circulation system. (15 Marks)
- Thermohaline circulation
- Heat redistribution
- Climate stability
- Carbon cycle regulation
📊 Page 9 Complete | Total Questions So Far: 90 / 1000
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