1 / 22

Population Pyramids

Population Pyramids. A Scaffolded Analysis. What is a population pyramid?. A diagrammatic representation of the age and sex composition of a population.

fredat
Download Presentation

Population Pyramids

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Population Pyramids A Scaffolded Analysis

  2. What is a population pyramid? • A diagrammatic representation of the age and sex composition of a population. • Allows you to analyze trends in birth & death rates, fertility rates, infant mortality rates, life expectancy as well as in similarities and differences in gender. • Helps to make predictions about future growth or decline. • Can give insight to the status of a particular country (core, periphery, semi-periphery). • Is really two bar graphs, one male and one female, back to back.

  3. What is a population pyramid? ...

  4. What is a population pyramid? ...

  5. Analyzing population pyramids • By only the shape of the population pyramid, you can make predictions about a country’s future growth • There are five general shapes to look for: • Unstable • Expanding • Stable • Stationary • Declining

  6. Unstable Population • High birth & death rates • Low life expectancy • Brings a countries medical system or political system into question • lack of contraceptives • lack of medical treatment • Consider: Infant Mortality Rate • War? Disease?

  7. Expanding Population • High birth rates • Death rates a bit lower, life expectancy starting to improve • Suggests a decent medical system • Expect the country’s population to increase rapidly • Lots of young people, not many elderly people • Medical improving, nutrition improving, standard of life improving

  8. Stable Population • Slow growth • Low birth & death rate • High life expectancy • Birth rate > Death rate • Suggests a good medical system: availability of contraceptives and medical treatment • Incomes increasing, standard of living increasing, children are becoming more of an expense

  9. Stationary / Slow Growth Population • All age groups similar • Birth & death rates low • Life Expectancy high • Less and less babies • No growth • Birth rate = death rate

  10. Declining Population • No country has reached this stage yet, therefore this pyramid represents a prediction of future trends • Low birth & death rate • High Life Expectancy • Death rate > Birth rate

  11. Canada’s Population Pyramid *What can we decipher about Canada’s population from this pyramid? Which of the five classifications might we give to Canada? How did our population pyramid reach this shape? Germany

  12. Analyzing Pyramids Afghanistan 2009 • classification? • death rate? • birth rate? • life expectancy? • predicted growth? • periphery, semi-periphery or core?

  13. Analyzing Pyramids United Kingdom 2009 • classification? • birth rate? • death rate? • life expectancy? • infant mortality? • predicted growth? • periphery, semi-periphery or core?

  14. Analyzing Pyramids Brazil 2009 • classification? • birth rate? • death rate? • life expectancy? • infant mortality? • predicted growth? • periphery, semi-periphery or core?

More Related