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MCHS AP Human Geo2

Unit 2: Population- Migration and Dispersion

Age Distribution (Population Pyramid) Used to show development, significant events in countries, etc.
Carry capacity The population level that can be supported, given the quantity of food, habitat, water
Cohort Population of various age categories in an age-sex population pyramids. Used to show the stage of a country in the Demographic Transition Model
Demographic Equation births-deaths+net migration
Demographic Momentum The tendency for growing population to continue growing after a fertility decline because of young age distribution
Demographic Transition Model Stage 1: Low Growth Stage 2: High Growth Stage 3: Moderate Growth Stage 4: Low Growth Stage 5: Zero/Negative Growth (not officially a stage)
Dependency Ratio Number of people who are too young or too old to work compared to number or people who can work
Doubling Time Number of years it takes to double a population
Ecumene Proportion of Earth's surface occupied by permanent human settlement.
Infant Mortality Rate Annual number of infant deaths compared to live births
J-Curve In a population pyramid, it shows exponential growth.
Thomas Malthus Geographer that first started worrying about overpopulation. People reproduce geometrically while food is produced arithmetically.
Natality (Crude Birth Rate) Ratio of live births in an area to the population of that area
Overpopulation Relationship between the number of people on Earth and the availability of resources
Population Distributions Arrangement of a feature in space
Population Explosion Sudden increase in population
Population Projection Predicts the future population of an area or world
Rate of Natural Increase Percentage by which a population grows in a year
Standard of Living Refers to the quality and quantity of goods and services available to people and the way they are distributed within a population
Sustainability Providing the best outcomes for human and natural environments both in the present and the future
Underpopulation refers to the sharp decrease in a region's population
Zero Population Growth Crude birth rate = crude death rate, thus natural increase is zero
Chain Migration When one family member/group migrates to a country and other groups follow shortly after
Cyclic Movement Trends in migration that have a clear cycle
Forced Migration When people are removed from their counties and forced to live elsewhere because of war, natural disaster, government instability
Gravity Model Predicts that the optimal location of a service is directly related to the number of people in the area and inversely related to the distance people must travel to access it
Internal Migration Permanent movement within a country
Intervening Opportunity Environmental or cultural feature that helps migration
Intercontinental Migration Permanent movement from one county to a different country within the same continent.
Interregional Migration Permanent movement from one region of a country to another region
Rural-Urban Migration Permanent movement from rural area to city
Push-pull factors Factors that induce people to leave or come to a location
Transhumance Seasonal migration of livestock between mountains and lowland pasture areas
Created by: hayhay543