click below
click below
Normal Size Small Size show me how
Population
Population terms
Question | Answer |
---|---|
Demographic Transition | The process of change in a society's population froma condition of high crude birth and death rates and low rate of natural increase to a condition of low crude birth abd death rates, low rate of natural increase, and a higher total population |
Infant Mortality rate (IMR) | The total amount of deaths each year among infants inder 1 year old for every 1,000 live births in a society |
I=PAT | Impact= Population*Affluence*Technology |
Physiological Density | The number of people per square unit of arable land (land suitable for architecture) |
Crude Birth Rate (CBR) | The total number of live births in a year for every 1,000 people alive in the society |
Migration | Form of relocation diffusion involving a permanent move to a new location. |
Urbanization | An increase in the percentage and in the number of people living inurban settlements |
Zero Population Growth (ZPG) | A decline of the total fertility rate to the point where the natural increase rate equals zero |
Demography | Scientific study of population characteristics |
Crude Death Rate (CDR) | The total number of deaths in a year for every 1,000 people alive in a society |
Chain Migration | Migration of people to a specific loctaion because relatives or members of the same nationality previously migrated there. |
Literacy Rate | The percentage of a country's poeple who can read and write |
Arithmetic density | The total number of people divided by total land area |
Natural Increase Rate (NIR) | The percentage growth of a population in a year, computed as crude burth arte minus crude death rate |
Total Fertility Rate (TFR) | The average number of children a woman will have throughout her child bearing years |
Push and Pull Factors | Factor that induces people to leave a location, or to move to a new location |
Fertility | Measurement of actual number of offspring produced through sexual reproduction; usually descibed in number of offspring of females, since paternity can be hard to determine |
Fecundity | Physical ability to reproduce |
Population momentum | A potential for increased population growth as young members reach reproductive age |
Mortality | Death Rate in a population; the probablilty of dying |
Carrying Capacity | The maximum number of individuals of any species that can be supported by a partitcular ecosystem on a long term basis |
Logistic Growth | Growth rates regulated by internal and extrenal factors taht establish an equilibriun with environmental resources (S curve) |
Life expectancy | The average age that a newborn infant can expect to attain in a particular time or place |
Life-span | The longest period of time reached by a type of organism |
Megacity | Urban area with more than 10 million in habitants |
Biotic Potential | The maximun reproductive rate or an organism, given unlimited resources and ideal conditions. Compare with environmental resistance |
Exponential Growth | Growth at a constant rate of increase per unit of time; can be expressed as a constant fraction or exponent (Geometric) |
Environmental Resistance | All limiting factors that tend to reduce population growth rates abd set the maximum allowable population size or carrying capacityof an ecosystem |
Natality | Production of new indiviuals by birth, hatching, germination or cloning |
Family Planning | Controlling reproduction; planning the timing of birth and having as many babies as are wanted and can be supported |