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7 Billion and Beyond PowerPoint Presentation
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7 Billion and Beyond

7 Billion and Beyond

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7 Billion and Beyond

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  1. What does it all mean? 7 Billion and Beyond

  2. Population Pyramids

  3. The Basics: • Notice the following points about pyramids: • Normally males are on the left and females are on the right. • Age categories are in 5 year intervals labeled up the center. • The horizontal axis is measured in numbers appropriate for the country. Population Pyramids

  4. Reading Population Pyramids • Shape of sides • Concave sides indicate a high death rate and convex sides indicate a low death rate.  This population pyramid exhibits concave sides indicating a high death rate. • Width of the base • Birth rate varies with the width of the base.  A wide base indicates a high birth rate and a narrow base indicates a low birth rate. • Bumps in the sides or Symmetry • Statistically speaking pyramids should be relatively symmetrical.  Any asymmetry indicates a difference in the male and female population Irregularities in the sides indicate a demographic anomaly.  The 30 -50 age group in this population pyramid represents the baby boom.  This bump will travel upward as the baby boomers age.

  5. 3 Patterns of Change

  6. I. Types of Population Pyramids Negative Growth Slow Growth Rapid Growth

  7. A. Rapid growth Pyramids • Rapid Growth population pyramids have this triangular/pyramid shape.  • The wide base of this population pyramid indicates a  high birth rate & the narrow top indicates a high death rate. • Generally speaking an expanding population is characteristic of a lower standard of living: • high birth rate due to poor access to birth control, lack of education etc.; • high death rate due to poor medical care & nutrition.

  8. B. Slow growth Pyramids • Generally speaking stable populations are characteristic of a high standard of living due to: • Low birth rate due to good family planning, access to birth control, financial planning, education, etc.; • Low death rate due to good medical care, nutrition, education etc.

  9. C. Negative Growth pyramids Negative Growth population pyramids have a narrower base than the reproductive age population.  This indicates a  decreasing population trend.  The low birth rate is indicative of a well developed country.

  10. World Economic Development Levels 7 – 10 4 - 6 1 - 3

  11. Generalizations: High death rate Low standard of living Poor Health care Low Literacy Rates – Below 50% Low Per Capita Incomes - $0 – 5,000 High birth rate Development Level: 1 – 3

  12. Generalizations: Medium to Low Death Rate Improving standard of living Improving Health care Literacy Rates in the 70% to 80% Per Capita Incomes rising $10,000 - $40,000 Birth rate Declining Development Level: 4 - 6

  13. Generalizations: Low Death Rate High standard of living Very good Health care Literacy Rates in the 90’s Per Capita Incomes $30,000 – and above Low Birth rate Development Level 7 - 10

  14. Dependent Populations Productive Population

  15. Average Monthly Temperature Average Monthly Precipitation