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Population Pyramids

Population Pyramids. Patterns in Human Geography. What are Population Pyramids?. Population pyramids are a type of graph that give information about the number of people in each age group and the balance of males and females in a country’s population. Which country would you rather live in?.

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Population Pyramids

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  1. Population Pyramids Patterns in Human Geography

  2. What are Population Pyramids? • Population pyramids are a type of graph that give information about the number of people in each age group and the balance of males and females in a country’s population.

  3. Which country would you rather live in? Country B Country A

  4. Which country would you rather live in? Japan Egypt

  5. Canada’s Population Pyramid

  6. Pyramid Organization Rules • The pyramid is divided down the middle and males are shown on the left, females on the right. • Each graph is a series of horizontal bar graphs stacked on top of each other. • The youngest people in a society are shown at the bottom of the graph and the oldest people are at the top. • The pyramid may show the population as a percentage or in millions.

  7. What are they used for? • Population pyramids are useful for studying issues related to the age and sex distribution of populations of different countries. • Number of males vs. females for particular age groups. • Number of old vs. young people. • The shape of the pyramid can tell us many things: • If the country is developed or developing. • If the country’s population is growing, stable, or shrinking

  8. Sample Population Pyramids

  9. Developing Countries - Shape • These countries have lower GDPs, higher fertility and infant mortality rates.

  10. Developed Countries - Shape • These countries have higher GDPs, lower fertility and infant mortality rates.

  11. Growing Populations • In these countries the birth rate is higher than the death rate. • The wider the base is, the faster the population growth.

  12. Stable Populations • In these countries the birth and death rates are equal, so there is no net population growth.

  13. Decreasing Populations • In these countries, the birth rate is smaller than the death rate. The smaller the base, the more rapid the decrease.

  14. Shapes Summary

  15. Practice • Does the pyramid below show a country that is developed or developing? Is it growing?

  16. Practice • Does the pyramids below show countries that are developed or developing? Are they growing?

  17. Practice • Does the pyramid below show a country that is developed or developing? Is it growing?

  18. Practice • Does the pyramid below show a country that is developed or developing? Is it growing?

  19. Check this out! • Population Pyramids of the World: http://populationpyramid.net/

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