Pyramid Population

- A population pyramid can help human geographers determine what will happen to a country's population.
- Age- the population pyramids visually present the population of a particular country broken down by age.
- Gender: population pyramids are split. One side presents the number of males in a particular population; the other reflects the number of females within the same population.
Elements of the Population Pyramid
- Young and Old Population: % of population under age 15: global average is 30 %, low is 17% (Europe); high of 42% (Africa); high number indicates great potential for future growth; Percentage 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 factor.
Questions
- Which country has an overall higher life expectancy?- B
- Which country has a larger percentage of young population?-A
- If both countries currently have the same total population, which country's population will be larger twenty years from now? Why?- A, because there is already more babies/ young people on A, but B has less then A.
- INFORMATION- http://www.census.gov/ipc/www/idb/pyramids.html
Book Info
- A common starting point for measuring demographic change is the rate of natural increase(RNI),which depicts the annual growth rate for a country or region as a percentage.
- This statistic is produced by subtracting the number of deaths in a given year from the births.
- Totally Fertility Rate (TFR) 2.1 the population will stay the same

TFR- the average number of children that women will bear in a population.