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14 Cards in this Set

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