SEBA Class 9 Elective Geography Additional Chapter 3 Population Growth and Distribution

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SEBA Class 9 Elective Geography Additional Chapter 3 Population Growth and Distribution

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Population Growth and Distribution

ADDITIONAL QUESTION ANSWER

1. What is the estimated world population in 2011, as declared by the United Nations?

Ans: In 2011, the world population was 7 billion according to data collected by individual countries and compiled by The United Nations.

2. What major event in history significantly boosted the growth of the human population around 8000 B.C.?

Ans: The development of agriculture around 8000 B.C. led to a more stable food supply, resulting in a rapid increase in population.

3. During which period did the world population experience a significant “population explosion”?

Ans: The population explosion occurred between 1950 and 2000, when the population grew from 2.5 billion to 6 billion.

4. Which continent has the highest population density, and what is it?

Ans: Asia has the highest population density among continents, with an average of 93 people per square kilometre.

5. What are two major geographical factors influencing population distribution?

Ans: Population distribution is influenced by many geographical factors. Among them climate, topography, soil, power and mineral resources, transport system, socio-economic condition, etc are worth mentioning.

6. Why is population density low in regions such as the Sahara Desert and the Tundra?

Ans: The extreme temperature and dry conditions in the Sahara and the cold conditions in the Tundra make these areas unsuitable for agriculture and human habitation, leading to low population densities.

7. How does topography impact population distribution?

Ans: Areas with flat plains and river valleys, like the Ganga-Brahmaputra Plain, tend to have higher population densities due to favorable agricultural conditions. In contrast, mountainous regions like the Himalayas have low population densities due to the difficulty of farming and transportation.

8. What is the estimated world population projection for 2050?

Ans: It is estimated that the world population could reach approximately 9.5 billion by 2050 if current growth trends continue.

9. How do power and mineral resources influence population distribution?

Ans: Areas with abundant power and mineral resources attract populations due to the economic opportunities they provide, leading to higher population density in these regions.

10. What role does transportation play in population distribution?

Ans: Well-developed transport systems attract populations as they improve connectivity, access to resources, and economic opportunities, leading to denser settlements in areas with good transportation.

11. Why do socio-economically developed areas tend to have high population density?

Ans: Socio-economically developed areas offer better employment opportunities, infrastructure, and higher carrying capacity, which attracts migrants and leads to increased population density.

11. Which continent had the highest population density according to the 2010 estimate? 

Ans: Asia had the highest population density, with 93 persons per square kilometer.

12. What is one major difference in population growth between developed and developing countries?

Ans: Between 1950 and 1970, the growth rate of population was higher in developing countries (2.2%) compared to developed countries (1.1%), reflecting differences in birth rates and economic factors.

13. Which four regions are identified as major population concentration zones globally?

Ans: Asia, South Asia, Western Europe, and the northeastern coastal plains of the USA are the major population concentration zones due to favorable geographical, climatic, and socio-economic factors.

14. What are two main types of human migration based on distance?

Ans: Human migration can be short-distance or long-distance, depending on how far people move from their original location.

15. What does emigration mean?

Ans: Immigration means entering another country for a permanent or temporary

residence or for some other reasons. So, if you leave your country, you will be an emigrant for your fellow citizens.

16. What does immigration mean?

Ans: Definition and Overview Immigration is defined by Merriam-Webster as the of entering a country with the intention to live there permanently. Immigration is the process of moving to a new country to live there permanently or for a long-term period. People may immigrate for a variety of reasons, such as seeking better job opportunities, reuniting with family, escaping conflict or persecution, or pursuing higher quality of life.