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  1. Age Distribution:(pop pyramid)
    (Population pyramid) is two back-to-back bar graphs, oneshowing the number of males and one showing females in a particular populationin five-year age groups. This isimportant because you can tell from the age distribution important characteristicof a country, whether high guest worker population, they just had a war or adeadly disease and more.
  2. Demographic equation:
    The formula that calculates population change. Theformula finds the increase (or decrease) in a population. The formula is foundby doing births minus deaths plus (or minus) net migration. This is importantbecause it helps to determine which stage in the demographic transition model acountry is in.
  3. Demographic regions:
    Cape Verde is inStage 2 (High Growth), Chileis in Stage 3 (Moderate Growth), and Denmark is in Stage 4 (LowGrowth). This is important because itshows how different parts of the world are in different stages of thedemographic transition.
  4. Demographic Transition model:
    Has 5 steps. Stage 1 is low growth, Stage 2 is HighGrowth, Stage 3 is Moderate Growth, and Stage 4 is Low Growth and Stage 5although not officially a stage is a possible stage that includes zero ornegative population group. This isimportant because this is the way our country and others countries around theworld are transformed from a less developed country to a more developedcountry.
  5. Dependency ratio:
    The number of people who are too you or too old to work compared tothe number of people in their productive years. This is important because thistells how many people each worker supports. For example the larger population of dependents, the greater financialburden on those who are working to support those who cannot.
  6. Ecumene:
    Theproportion of earths surface occupied by permanent human settlement. This isimportant because its tells how much of the land has been built upon and howmuch land is left for us to build on.Epidemiological transition model: This is a distinctive cause of death in each stageof the demographic transition. This isimportant because it can explain how a countries population changes sodramatically and more.
  7. J-curve:
    This is when the projection population show exponential growth; sometimes shapeas a j-curve. This is important becauseif the population grows exponential our resource use will go up exponential andso will our use as well as a greater demand for food and more.
  8. Malthus, Thomas:
    Was one of the first to argue that the worlds rate of population increase wasfar outrunning the development of food population. This is important because he brought up thepoint that we may be outrunning our supplies because of our exponentiallygrowing population.
  9. Natality:
    (Crude Birth Rate)
    This is the ratio of live birthsin an area to the population of that area; it is expressed as number of birthin year to every 1000 people alive in the society. This is important because it tells you therate a country is having babies as well as how fast you can expect thatpopulation to grow.
  10. Neo-malthusian-
    theory that builds upon Malthus’ thoughts onoverpopulation. Takes into count two factors that Malthus did not:population growth in LDC’s, and outstripping of resources other than food
  11. Population densities-



    • Population densities- the frequency with which something occurs in space is
    • density

    • *Arithmetic
    • density: total number of objects in an area. Used to compare
    • distribution of population in different countries.

    • *Physiological
    • density: number of persons per unit of area suitable for agriculture.
    • Could mean a country has difficulty growing enough food.

    • *Agricultural
    • density: the number of farmers per unit of area of farmland. May
    • mean a country has inefficient agriculture.
  12. Rate of natural increase-
    the percentage by which a population grows in ayear. CBR-CDR = NIR Excludes migration
  13. Sex ratio-
    the number of males per hundred females in thepopulation
  14. Sustainability-
    providing the best outcomes for human and naturalenvironments both in the present and for the future
  15. Gravity Model-
    Predicts that the optimal location of a service is directly related to thenumber of people in the area and inversely related to the distance people musttravel to access it.
  16. Internal Migration-
    Permanent movement within a particular country.
  17. Intervening Opportunity-
    An environmental or cultural feature of the landscape that helps migration.
  18. Migration Patterns:




    Migration Patterns:

    • Intercontinental- Permanent movement
    • from one country to a different country on the same continent.

    • Interregional- Permanent movement
    • from one region of the country to another.

    • Rural-Urban- Permanent movement from suburbs and rural area to
    • the urban city area.

  19. Push-Pull Factors-
    Factors that induce people to leave old residence and move to new locations.
  20. Transhumance-
    Seasonal migration of live stock between mountains and lowland pasture areas.
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