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MCHS AP Human Geo2
Unit 2: Population- Migration and Dispersion
| Question | Answer |
|---|---|
| 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 |