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Chapter 5 Section 1 World Geography Population Geography Pg. 87.

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Presentation on theme: "Chapter 5 Section 1 World Geography Population Geography Pg. 87."— Presentation transcript:

1 Chapter 5 Section 1 World Geography Population Geography Pg. 87

2 Studying Population  Study the relationships between populations and the environment.  Demography – the statistical study of human populations.  Use these numbers to forecast what the population will be like in the future.

3 Population Density  The average number of people living in an area.  Persons per square mile.  You can tell how large a country is, or discover what areas they live in.

4 Population Distribution  About 90% of the world’s people live in the Northern Hemisphere.  Lowland areas are heavily populated.  People tend to live in areas that are favorable for settlement.

5 Population Change  The number of people in an area are a result of these 3 factors: –Birthrate – number of birth per 1,000 in one year. –Death rate – number of deaths per 1,000 per year. –Migration – people moving from one place to another.

6 Migration  Geographers – study migration by analyzing push factors and pull factors. Push factors are what causes people to leave one place.  Pull factors – attracts people to a location.

7 Natural Increase  Rate of natural population growth. Number of birth and deaths in a year.  Highest rates of increase are found in Africa and Southwest Asia.  Lowest rates of increase are in Europe and North America.

8 World Population Trends  Number of people is increasing by 80 million per year.  Some worry about overpopulation. This exists when the number of people is too large to be supported by available resources.  No one knows for sure how many people the world can support.

9 The Demographic Transition  A model that shows how birthrates and death rates dropped in many western countries as they developed modern economies.  Most of the world’s richest and technological advanced countries have had their birthrates drop.

10 Future Populations  Population projections are estimates of a future population’s size, age, growth rate, or other characteristics based on current data.  All countries will face population-related challenges. Ex: caring for growing number of children or older people.


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