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Population Concepts

APHG Unit 2 Vocabulary and Concepts

TermDefinition
agricultural density The number of people living in rural areas per unit of agricultural land.
carrying capacity The number of people an area can support on a sustained basis.
chain migration That part of a migrant flow (usually relatives and friends) that follows former migrants to an area.
channelized migration Repetitive pattern of migration not linked to family or ethnicity (senior citizens moving to the Sun Belt).
crude birth rate (CBR) The number of babies born per 1
crude death rate (CDR) The number of deaths per 1
arithmetic density The number of people per unit of land (also called crude density)
demographic transition model A model that shows the link between population growth and economic development using four or five stages of economic development.
demography The study of the characteristics of a human population.
density The number of an item within a unit of area.
dependency ratio The ratio of people under age 15 and those 65 older to those age 15 to 65.
developed countries (DCs) Countries such as the U.S.
distance decay The principle that says migrants try to minimize the friction of distance by moving to locations closer to them rather than farther away.
doubling time The length of time it takes for a country's population to double in size if the growth rate stays the same.
ecumene The part of the Earth that is fit for humans to live.
human capitol theory of migration Theory that states that educated workers often migrate from poor countries to wealthy countries seeking better-paying jobs.
internally displaced person A person who is forced out of the home region due to war
intervening opportunity The idea that migrants will choose a location closer rather than farther if all other factors are roughly the same.
life course theory of migration Theory that states that the interaction effects of family life course events (marriage
migration The movement of humans from one place to another.
physiological density The number of persons per unit of agricultural land
place utility A person's satisfaction or dissatisfaction with a place.
population density The number of person per unit of land area.
population momentum The propensity for a growing population to continue growing even though fertility is declining because of their young age distribution.
population pyramid A model that shows the composition of a population by age and sex.
pull factor Factors such as better job opportunities or a more pleasant climate that attract a migrant to a new area.
push factor Factors such as war
rank-size rule Proposed by Zipf
rate of natural increase (NIR or RNI) the crude birth rate minus the crude death rate
replacement level The population level necessary to assure the population continues to replace itself.
step migration The series of small moves of a migrant to reach a destination
zero population growth A condition in which births plus immigration equals deaths plus emigration for individual countries.
neo-Malthusianism the belief that population growth has a tendency to exceed food supply but that government policies can successfully rein this growth in.
anti-natalist policy Government actions to restrict growth of the population.
Created by: rkrauseemhs
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