1. The Core Concept: Why “People” are Resources
In the CBSE framework, the emphasis is on Human Capital.
Definition: People are a nation’s greatest resource. Nature’s bounty becomes significant only when people find it useful.
Key Insight: It is the health, education, and motivation of people that turn them into an asset. Without these three traits, a large population becomes a “liability” rather than a “resource.”
2. Distribution and Density (The Numbers Game)
CBSE exams frequently ask for the distinction between these two terms.
Distribution: The pattern of where people live (e.g., 90% of people live in 10% of the land).
Density: The mathematical ratio (Density = Total Population / Total Area).
Global Average: 51 persons per sq. km.
India’s Average: 382 persons per sq. km (2011 Census).
3. Factors Influencing Population (The 5-Mark Question)
In a CBSE paper, always structure this answer using sub-headings.
A. Geographical Factors
1. Topography: People prefer Plains (Ganga Plains) over mountains (Himalayas) because they are suitable for farming and manufacturing.
2. Climate: People avoid extremes. No one wants to live in the Sahara (too hot) or the Russian Arctic (too cold).
3. Soil: Fertile areas like the Nile valley or the Brahmaputra plains support dense populations.
4. Water: Fresh water is life. River valleys are the most densely populated areas in the world.
5. Minerals: Diamond mines in South Africa and oil in the Middle East led to human settlement in otherwise difficult areas.
B. Social, Cultural, and Economic Factors
Social: Better housing, health, and education (e.g., Pune).
Cultural: Religious or cultural significance (e.g., Varanasi, Jerusalem).
Economic: Industrial areas provide employment (e.g., Osaka in Japan, Mumbai in India).
4. Population Change: The Components
Population doesn’t just grow; it changes based on three “Vital Rates”:
1. Birth Rate: Live births per 1,000 people.
2. Death Rate: Deaths per 1,000 people.
3. Migration: Movement of people in (Immigration) and out (Emigration) of an area.
CBSE Concept: Natural Growth Rate
This is the difference between the birth rate and the death rate. The “Population Explosion” occurred because the death rate fell rapidly due to medicine, while the birth rate stayed high.
5. Population Composition (The Age-Sex Pyramid)
This is the most technical part of the chapter. CBSE often provides a pyramid diagram and asks you to interpret it.
What it shows: The total population divided into various age groups (e.g., 5 to 9 years, 10 to 14 years) and the percentage of males and females in each group.
Case Study – Kenya: A pyramid that is broad at the base and narrows rapidly at the top. This means high birth rates but also high death rates.
Case Study – India: The pyramid is broad in the younger age groups. This is a “Demographic Dividend”—we have a huge labor force.
Case Study – Japan: A narrow base indicates low birth rates. A broad top indicates a high number of elderly people.
✍️ CBSE Exam Masterclass: Expected Questions
Very Short Answer (1 Mark)
1. Define ‘Life Expectancy’.
2. What was the world population in 1999? (Answer: 6 Billion).
3. Name the ministry in India created in 1985 to improve people’s skills. (Answer: Ministry of Human Resource Development, now Ministry of Education).
Short Answer (3 Marks)
1. Why are the Ganga plains more densely populated than the Andes mountains?
2. Explain the concept of ‘Natural Growth Rate’.
3. Distinguish between Emigrants and Immigrants.
Case-Based / Long Answer (5 Marks)
1. “Human Resource is the ultimate resource.” Justify this statement with three reasons.
2. Describe the population pyramid of a country with low birth rates and low death rates. What are the economic implications for such a country?
💡 Quick Revision Strategy
Mnemonic for Factors: “T-C-S-W-M” (Topography, Climate, Soil, Water, Minerals).
The 2011 Census Rule: Always quote “382 per sq km” for India’s density to impress the examiner.
Focus on the Pyramid: If the base is wide, birth rates are high. If the top is wide, the country has good healthcare (people live longer).
Check out our notes on “Agriculture” to see how population density affects farming types!