Population Pyramids Waves of humanity…
What are population pyramids? <ul><li>A population pyramid shows the history of the country’s population growth.  </li></u...
Parts of a pop pyramid Title Y axis- Age of people Oldest people on top Youngest people on bottom X axis- # of people of ...
Types of pyramids <ul><li>Rapid Growth - a broad base , indicating a high proportion of children , a rapid rate of popu...
Types of pyramids <ul><li>Slow Growth/Stable — a structure with bars that even out and reflect stable or slow growth o...
Types of pyramids <ul><li>Negative Growth — a high proportion of elderly persons and declining numbers. </li></ul><ul>...
Here come the problems
Rapid Growth <ul><li>High Birth Rate - overcrowding, shortages of resources . </li></ul><ul><li>High Death Rate - a youn...
Slow Growth/Stable <ul><li>Fewer problems than other pyramids, however, governments must prepare for an constantly expand...
Negative Growth <ul><li>The worst long term consequences of any pyramid. </li></ul><ul><li>Very Low Birth Rate - Young ...
Where they happen… <ul><li>Red and orange areas </li></ul><ul><li>Developing </li></ul><ul><li>countries </li></ul>Rapid ...
Where they happen… <ul><li>Some Blue/ light blue areas </li></ul><ul><li>Developed </li></ul><ul><li>countries </li></ul...
Where they happen… <ul><li>Some Blue/ light blue areas </li></ul><ul><li>Developed/Developing </li></ul><ul><li>countrie...
Other factors? <ul><li>Personal choice and changing gender roles may play an increasing role in population growth change. ...
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Population Pyramids Decoded: Waves of Humanity

Published on: Mar 4, 2016
Published in: Education      Technology      News & Politics      
Source: www.slideshare.net


Transcripts - Population Pyramids Decoded: Waves of Humanity

  • 1. Population Pyramids Waves of humanity…
  • 2. What are population pyramids? <ul><li>A population pyramid shows the history of the country’s population growth.  </li></ul><ul><li>Governments use these graphs to make predictions about the future needs of their people . </li></ul><ul><li>Example 1- A high growth rate will mean more schools and daycares, while a slow rate might mean fewer will be needed. </li></ul><ul><li>Example 2- a large elderly population will mean more nursing homes and more pharmacists to sell their medicine. </li></ul>
  • 3. Parts of a pop pyramid Title Y axis- Age of people Oldest people on top Youngest people on bottom X axis- # of people of a certain age * Men are usually on the left side, women on the right. * *
  • 4. Types of pyramids <ul><li>Rapid Growth - a broad base , indicating a high proportion of children , a rapid rate of population growth, and a low proportion of older people. </li></ul><ul><li>It has a general shape of a triangle. </li></ul>
  • 5. Types of pyramids <ul><li>Slow Growth/Stable — a structure with bars that even out and reflect stable or slow growth over a period. A even proportion of elderly and children that reduces in number as the people become older. </li></ul><ul><li>It has a general shape of a pentagon. </li></ul>
  • 6. Types of pyramids <ul><li>Negative Growth — a high proportion of elderly persons and declining numbers. </li></ul><ul><li>It has a general shape of a hexagon. </li></ul>
  • 7. Here come the problems
  • 8. Rapid Growth <ul><li>High Birth Rate - overcrowding, shortages of resources . </li></ul><ul><li>High Death Rate - a young population, a shortage of working adults to care for children. Pressure for even larger families to replace large number that die. </li></ul><ul><li>Low Life Expectancy - People do not live very long. Poor health and tough living conditions will keep the country ‘young’. The real problem starts when death rate decreases… </li></ul>*All of this is a recipe for instability!
  • 9. Slow Growth/Stable <ul><li>Fewer problems than other pyramids, however, governments must prepare for an constantly expanding population . </li></ul><ul><li>Ever larger elderly population and young population means that priorities may be divided=not enough schools or retamas. </li></ul><ul><li>Low Birth rate - more kids survive and grow. </li></ul><ul><li>Low Death rate - Kids survive to be adults. </li></ul><ul><li>High Life expectancy -more workers and retirees. Fewer job openings makes education even more important . Also, adults more productive as their working lives are extended . Healthcare costs go up as they age. </li></ul>*Stable, but changing society.
  • 10. Negative Growth <ul><li>The worst long term consequences of any pyramid. </li></ul><ul><li>Very Low Birth Rate - Young children are less common=less schools needed. Population will shrink as fewer babies offset the elderly who die. </li></ul><ul><li>Low Death Rate - excellent living conditions and healthcare allow people live a long time. </li></ul><ul><li>High Life Expectancy -Elderly population become majority in a country . Government must boost spending on healthcare and other programs to help the older population. </li></ul><ul><li>We need people! - Fewer job openings= higher unemployment for younger adults. Ironically, as the pop. decline grows, there will be fewer people to fill those jobs. </li></ul>*Immigration needed, but some instability as the new arrivals change the culture.
  • 11. Where they happen… <ul><li>Red and orange areas </li></ul><ul><li>Developing </li></ul><ul><li>countries </li></ul>Rapid Growth <ul><li>Why here? </li></ul><ul><li>Low GDP </li></ul><ul><li>Low Standard of living </li></ul><ul><li>low literacy </li></ul><ul><li>High Infant mortality </li></ul>
  • 12. Where they happen… <ul><li>Some Blue/ light blue areas </li></ul><ul><li>Developed </li></ul><ul><li>countries </li></ul>Slow Growth/Stable <ul><li>Why here? </li></ul><ul><li>High GDP </li></ul><ul><li>High Standard of living </li></ul><ul><li>High literacy </li></ul><ul><li>Low Infant mortality </li></ul>
  • 13. Where they happen… <ul><li>Some Blue/ light blue areas </li></ul><ul><li>Developed/Developing </li></ul><ul><li>countries </li></ul>Negative Growth <ul><li>Why here? </li></ul><ul><li>High GDP, in decline </li></ul><ul><li>High Standard of living, maybe in decline </li></ul><ul><li>High literacy </li></ul><ul><li>Low Infant mortality </li></ul>Usually caused by political, economic, or societal decline
  • 14. Other factors? <ul><li>Personal choice and changing gender roles may play an increasing role in population growth change. </li></ul>