Topic: Salient features of world’s physical geography;
1. Bring out the factors that influence the temperature distribution on Earth. Account for the overall heat balance on earth despite some areas receiving more insolation than the others? (250 words)
Reference: NCERT – Class XI: Fundamentals of Physical Geography.
Why the question:
The question is part of the static syllabus of General studies paper – 1.
Key Demand of the question:
To explain about the factors that affect the temperature distribution and bring out reasons for overall heat balance on Earth.
Directive:
Account – Clarify the topic by giving a detailed account as to how and why it occurred, or what is the particular context. You must be defining key terms where ever appropriate, and substantiate with relevant associated facts.
Structure of the answer:
Introduction:
Start by mentioning about the temperature distribution on the Earth and its effects.
Body:
Mention the factors that influence the temperature distribution on earth. The Angle of Incidence or the Inclination of the Sun’s Rays, Duration of Sunshine, Transparency of Atmosphere, Land-Sea Differential, Prevailing Winds, Aspects of Slope, Ocean Currents, Altitude, Earth’s Distance form Sun.
In the next part, mention the reasons for the heat balance on the Earth. Regions between 40deg N to S receives more insolation and beyond that have a deficit of insolation. The factors such as planetary winds, ocean currents, jet streams and cyclones which are responsible for maintaining heat balance on the earth.
Conclusion:
State the impact of maintaining the heat balance on Earth.
