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Temperature

Gujarat Board · Class 11 · Geography

Quick revision notes for Temperature — Gujarat Board Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

44 questions20 flashcards5 concepts

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Key Topics to Revise

1

Solar Radiation and Insolation

  • Sun is the primary source of heat energy for Earth, located approximately 15 crore km away
  • Nuclear fusion of hydrogen nuclei in Sun's core releases tremendous energy
  • Sun's surface temperature: 6000°C, Central temperature: 1.5 crore°C
2

Factors Affecting Distribution of Insolation

  • Angular length of Sun's rays: Vertical rays in tropics receive more heat, slanting rays in polar regions receive less
  • Length of day: Longer days receive more insolation (summer > winter)
  • Density of atmosphere and height: 40-50% insolation absorbed in atmosphere, thin atmosphere absorbs less
3

Heat Budget of Earth

  • 18% insolation directly absorbed by atmosphere
  • 47% insolation reaches and absorbed by Earth's surface
  • 35% insolation reflected back as Albedo
4

Factors Affecting Temperature

  • Latitude: Temperature decreases from equator to poles due to angular difference of Sun's rays
  • Height above sea level: Temperature decreases with altitude (lapse rate 6.5°C/1000m)
  • Distance from sea: Coastal areas moderate, continental areas extreme temperatures

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Full Notes

Key Concepts

Solar radiation is the heatFive key factors influence insolation distributionOf total solar energy reaching Earth'sTemperature is the measure of atmosphericA phenomenon where temperature increases

Frequently Asked Questions

What are the important topics in Temperature for Gujarat Board Class 11 Geography?
Temperature covers several key topics that are frequently asked in Gujarat Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Temperature — Gujarat Board Class 11 Geography?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and 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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