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Hum Geo Sem 1-Unit 2

Unit 2: Population

Population Density A measurement of the number of people per given unit of land.
Arithmetic Population Density Population of a country or region expressed as an average per unit area. Divide population of areal unit by number of square kilometers or miles
Physiologic population density The number of people per unit area of arable (cultivable) land
Major population concentrations East Asia, South Asia, Europe, North America, Nile Valley...
Megalopolis large coalescing supercities that are forming in diverse parts of the world.
Doubling time The time required for a population told double in size
Population explosion The rapid growth of the world's human population during the past century, ever shorter doubling times and accelerating rates of increase
Natural increase Population growth measured as the excess of live births over deaths. Natural increase of a population does not reflect either emigrant or immigrant movement
crude birth rate (CBR) Number of live births yearly per thousand people in a population
Crude Death Rate (CDR) Number of deaths yearly per thousand people in a population
Total Fertility Rate (TFR) Average number of children born to a woman during her childbearing years
Infant Mortality Rate (IMR) Figure that describes the number of babies that die within the first year of their lives in a given population
Demographic Transition Model based on Western Europe's experience. Changes in population growth in countries under industrialization process. High birth and death rates followed by plunging death rates creating population gain. Convergence of death and births at lower level
Stationary Population Level (SPL) Level at which a national population ceases to grow.
Immigration Person migrating into a new country or area
Emigration a person leaving a country or area to settle elsewhere
Laws of Migration Developed by British demographer Ernst Ravenstein, five laws that predict the flow of migrants
Law of Migration 1 Every migration flow generates a return or countermigration
Law of Migration 2 The majority of migrants move a short distance.
Law of Migration 3 Migrants who move longer distances tend to choose big-city destination
Law of Migration 4 Urban residents are less migratory than inhabitants of rural areas
Law of Migration 5 Families are less likely to make international moves than young adults
Distance Decay Effects of distance on interaction, generally the greater the distance the less interaction
Step migration Migration to a distant destination that occurs in stages, for ex. from farm to nearby village and later to town and city
Chain migration ex. one migrant settles and communicates through others to describe this place to family and friends who in turn then migrate there.
Voluntary migration Movement in which people relocate in response to perceived opportunity, not because they are forced to move.
Forced migration Human migration flows in which the movers have no choice but to relocate.
Remittances Money migrants send back to family and friends in their home countries, often in cash, forming an important part of the economy in poorer countries.
Cyclic movement Movement -ie. nomadic- that has a closed route and is repeated annually or seasonally
Refugees People who have fled their country because of political persecution and seek asylum in another country
Periodic movement Movement -for example, college attendance or military service -that involves temporary, recurrent relocation
Restrictive population policies Government policies designed to reduce the rate of natural population increase.
Eugenic population policies Government policies designed to favor one racial sector over others.
Expansive population policies Government policies that encourage large families and raise the rate of population growth.
One child policy A program established by the Chinese government in 1979 to slow population growth in China.
Created by: CJoannou