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14 Cards in this Set
- Front
- Back
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demography
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the scientific study of population characteristics
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overpopulation
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the number of people in an area exceeds the capacity of the environment to support life at a decent standard of living
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ecumene
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the portion of earths surface occupied by permanent human settlement
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arithmetic density
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the total number of people divided by total land area
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physiological density
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the number of people supported by a unit area of arable land
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cultural density
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the ratio of the number of farmers to the amount of arable land
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KEY ISSUE 2
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NUMBER 2
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crude birth rate (CBR)
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is the total number of live births in a year for every 1,000 people alive in the society
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Crude Death rate (CDR)
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the total number of deaths in a year for every 1,000 people alive in the society
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Natural Increase Rate (NIR)
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the percentage by which a population grows in a year
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doubling time
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the number of years needed to double a population, assuming a constant rate of natural increase
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total fertility rate (TFR)
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the average number of children a woman will have throughout her childbearing years (ages 15-45)
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infant mortality rate (IMR)
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the annual number of deaths of infants under one year of age, compared with total live births
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life expectancy
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at birth measures the average number of years a newborn infant can expect to live at currrent mortality levels
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