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Audio Notes: भौतिक भूगोल: समुद्र विज्ञान Video Lecture | UPSC Audio Notes
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FAQs on Audio Notes: भौतिक भूगोल: समुद्र विज्ञान Video Lecture - UPSC Audio Notes
| 1. What is oceanography and why is it important? |  |
Ans.Oceanography is the scientific study of the ocean, encompassing its physical, chemical, biological, and geological aspects. It is crucial for understanding global climate patterns, marine ecosystems, and the resources the ocean provides. Oceanography helps in managing marine resources, predicting natural disasters, and understanding human impacts on ocean environments.
| 2. What are the main branches of oceanography? | |
Ans.Oceanography is divided into four main branches: physical oceanography, which studies ocean currents and waves; chemical oceanography, focusing on the composition of seawater; biological oceanography, which examines marine organisms and ecosystems; and geological oceanography, which investigates the ocean floor and sediment processes. Each branch contributes to a comprehensive understanding of ocean systems.
| 3. How do ocean currents affect climate? | |
Ans.Ocean currents play a vital role in regulating climate by distributing heat around the planet. Warm currents, like the Gulf Stream, transport warm water from the equator to higher latitudes, influencing weather patterns and temperatures. Conversely, cold currents can cool coastal regions. Changes in these currents can lead to significant climate shifts, impacting ecosystems and human activities.
| 4. What is the significance of the ocean's role in the carbon cycle? | |
Ans.The ocean is a major component of the carbon cycle, absorbing about 30% of atmospheric carbon dioxide (CO₂). Through processes like photosynthesis by phytoplankton and the formation of carbonate shells, the ocean helps regulate global climate. This absorption mitigates the effects of climate change, but increased CO₂ levels can lead to ocean acidification, threatening marine life.
| 5. What are some major threats to ocean health? | |
Ans.Major threats to ocean health include pollution, overfishing, habitat destruction, and climate change. Plastic and chemical pollutants disrupt marine ecosystems, while overfishing depletes fish stocks and alters food webs. Climate change results in rising sea temperatures and ocean acidification, leading to coral bleaching and loss of biodiversity. Addressing these threats is essential for sustainable ocean management.
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Oct 12, 2025
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