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Chapter 18 of 33
Chapter Summary

Insolation and Temperature

ICSE · Class 11 · Geography

Summary of Insolation and Temperature for ICSE Class 11 Geography. Key concepts, important points, and chapter overview.

65 questions40 flashcards5 concepts

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Overview

Insolation is the incoming solar energy received by Earth, and temperature is the measure of the degree of hotness of air, land, or water. Earth receives only one in two billion parts of the Sun's total radiation, yet this small amount controls major physical and biological processes. The chapter ex

Key Concepts

The Sun is an extremely hot

The Sun is an extremely hot gaseous spherical mass with a surface temperature of 6000°C. It continuously radiates heat energy into space. Earth is abo

Radiant energy from the Sun

Radiant energy from the Sun that strikes the Earth is called insolation. It is received in the form of short waves. At the outer limit of the atmosphe

Of 100 units of solar radiation

Of 100 units of solar radiation received, 51 units reach the Earth and 49 units are reflected back. Of the reflected amount, 6 units are scattered int

Up to 38° north and south

Up to 38° north and south latitudes, incoming solar radiation is greater than outgoing terrestrial radiation, so there is surplus energy. Beyond these

Insolation depends on the inclination

Insolation depends on the inclination of the Sun's rays, length of the day, transparency of the atmosphere, distribution of land and water, slope of l

Learning Objectives

  • Understand solar radiation and the meaning of insolation
  • Explain the Earth's heat budget and latitudinal heat balance
  • Identify factors that control insolation and temperature
  • Describe how the atmosphere is heated by radiation, conduction, convection, and advection
  • Compare insolation with temperature and understand their difference

Frequently Asked Questions

What are the important topics in Insolation and Temperature for ICSE Class 11 Geography?
Insolation and Temperature covers several key topics that are frequently asked in ICSE 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 Insolation and Temperature — ICSE Class 11 Geography?
Understand the core concepts first, then work through the 65 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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