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Population Vocabulary

1. demography: study of human population and how they change (due to birth, death or migration)

2. life expectancy: average age that a person is expected to live

3. total fertility rate: average number of children a woman is expected to have in her lifetime

4. replacement rate: the number of births needed to replace those that die (most developed countries have a rate of 2.1)

5. rate of natural increase: how fast your population is growing (birthrate minus deathrate equals rate of natural increase)

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6. birthrate: number of babies born for every 1000 people per year(shown as a percentage)

7. death rate: number of deaths for every 1000 people per year(shown as a percentage)

8. doubling time: the length of time it takes to double your population (the higher your rate of natural increase the lower your doubling time)