Rapid Increase in the World's Population

Rapid Increase in the World's Population

IGCSE Geography

​Lesson objectives

• ​Describe how rapidly the world's population is increasing

• ​Understand the reasons for such a rapid increase

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Open Ended

World Population Growth by Each Billion

What can you observe?

​Reasons for increase

• ​10,000 years ago - people learned how to domesticate (tame) animals and cultivate (farm) crops

• ​1804 - Industrial Revolution and rise of Cities (first billion)

• ​It took only 12 years for the world population to increase from 6 billion to 7 billion

• ​6-7 billion people more in just 200 years

​Carrying Capacity

​The largest population that the resources of a given environment can support.

Open Ended

Is population growth a bad thing or a good thing?

It depends.

​More people means more workforce, but it needs proper infrastructure and government services.

​Demography

people who study human populations

​DEMOGRaphers

​the study of human populations by examining the size, structure, and movements of populations over space and time.

​What do demographers see?

• Population incease is much higher in less developed countries. (developing countries).

• ​The faster rate of growth is taking place in least developed countries. (poor countries)

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• Note: China is in the "more developed" category or group.

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​What do demographers see?

• 1950s was the turning point

  • ​after the second world war, the population growth in the poor countries overtaken the rich.

• ​In 1960s, there was a population explosion or a rapid population growth.

​What do demographers see?

• By 1990s, global population growth was down to 1.8 and 1.2 per cent in 2016. So it is decreasing.

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Remember

While the the rate of global population growth has been falling for over 50 years, world's population continues to increase,

​Demographic momentum

​Although the global population growth rate has been declining for decade, the number of people added each year remains very high because there are currently so many. women in the child-bearing age.

​What will happen in the future?

​"Developed countries [like China] will experience little to no population growth in the this century, and much of that growth will be from immigration from less developed countries."

​- Population Reference Bureau

​Activity

Open MS Teams -> General ->Class Notebook -> Unit 1.1 Population -> Rapid Increase...

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​Lesson objectives

• ​Describe how rapidly the world's population is increasing

• ​Understand the reasons for such a rapid increase