Population Pyramids

Tuesday, September 15, 2009
11:23 AM

Learning-objectives: teach us components of the pyramid. -gather and analyze info.

• Graphically represent the age and gender distribution of a certain population
• Can be represented by region and by country
• Help human geographers determine what is happening to individual populations across the globe

• Age: younger at the bottom old at the top
• Males on the left and females on the right
• Percentage under the age of 15: global average is 30% , ( Europe ) low is 17%. (Africa) high of 42 percent; high number indicates great potential for future growth, % of population over age 65: identifies need for health care and other social services
• Life expectancy: average number of years a person is expected to live; affected by many factors

• What its good for

• Which country has an overall higher life expectancy
○ Nation B
• Which country has a larger percentage of young population
○ Nation A
• If both countries have the same total population, which will be larger twenty years from now? Why?
○ Nation B because their people life longer and won't die so easily.