Population Pyramids

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  • date post

    03-Dec-2014
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    Education

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Transcript of Population Pyramids

  • 1.
    • In 5 sentences or more, how prepared were you for the quiz on Friday. What were some areas you think you did really well on? What areas do you think you could improve on?
  • Have your food webs out and ready to turn in. Make sure your name and block are on it.

2. 3.

  • Reminder
  • population is a group of the same species living together

4.

  • Graph of a countrys population
    • Based on
        • Age
        • Males/Females

5. 6.

  • Population pyramids are also a way to predict population growth
    • Can monitor how different age groups grow over time
    • Video of changing US population pyramid

7.

  • Rapid Growth
  • Slow growth
  • Negative Growth

8.

  • Pyramid like
  • More youth than elderly
  • More common in developing nations
  • Usually high birth rate and high death rates
    • Why?
  • Examples:
  • Mexico, India, Haiti

9.

  • Levels are more equal than rapid growth pyramid
  • More common in established nations
  • Long life expectancy
  • Examples
    • United States

10.

  • Marked by large elderly population
  • Low birth rates, low death rates
  • Opposite pyramid of rapid growth
  • Examples:
    • Germany, Italy

11.