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49 Cards in this Set
- Front
- Back
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Arithmetic Density |
the number of people per square mile or per square kilometer |
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Physiological Density |
the number of people per unit of arable land |
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Agricultural Density- |
the number of farmers per unit of arable land |
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Crude Density |
density in terms of people per total square land unit |
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demographers. |
People who study population |
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Carrying Capacity |
the relationship between a population size and the amount of resources that can support it |
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Sex Ratios |
number of males per 100 females in a population (males births/female births * 100) |
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Rapid Growing population on pyramid |
a wide base and narrow head, |
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Slow growing population on pyramid |
a more narrow base, yet is still bigger than the rest |
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Slowing population growth on pyramid |
middle is the widest portion, |
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Population decline on pyramid |
narrow, trophy shaped pyramid with larger top cohorts, |
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Crude Birth Rate (CBR) |
the total number of live births in an area for every 1,000 people alive. |
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Total Fertility Rate (TFR) |
average number of children a woman will have in her childbearing years. |
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Infant Mortality Rate (IM) |
refers to how many babies under one year of age die in each year compared to live births. |
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Crude Death Rate (CDR). |
is the total number of deaths in one year per 1,000 people. |
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Population Doubling Time |
the number of years needed to double a population. |
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Migration |
the permanent movement of people from one area to another. |
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The Demographic Transition |
How populations evolve over time |
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Stage 1 |
High Birth rates High death rates Stable or slow increase |
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Stage 2 |
High Birth rates Falling death rates Rapid increase |
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Stage 3 |
Falling birth rates falling death rates Natural increase slows |
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Stage 4 |
Low birth rates Low death rates Almost stable natural increase |
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Stage 5 |
LOW birth rates Low death rates Little natural increase |
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Endemic |
stays local |
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Epidemic |
spreads through region |
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Pandemic |
spreads across regions |
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The Epidemiological Transition Model |
Helps to explains changes in mortality for a country |
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Malthusian Theory |
population would outpace food supply because population grows geometrically while food supply grows arithmetically. |
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Pro-natalist |
policies promote births |
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Anti-Natalist |
policies seek to restrict birth. |
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The Gravity Model |
the hypothesis that more people will be attracted to large cities even if they are far away. |
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Push factors |
(negative) situations, events, or conditions in a place where a person currently lives that causes them to want to leave. |
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Dependency Ratio |
the number of people who are under 15 and over 65 |
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Pull factors |
positive situations, events, or conditions in a place that draw people to a new destination. |
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Intervening obstacles |
negative circumstances or features that hinder migration. |
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Intervening opportunities |
positive circumstances or features that hinder migration. |
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Immigrants |
-people entering a country or other political subdivision |
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Emigrants |
-people leaving a country or other political subdivision |
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Asylum Seekers: |
refugees who seek protection from another country |
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Transnational Migration |
Migrants leave their country of origin and enter another country Migrants maintain a connection to their country of origin Often settle in areas of similar migrants Leave their mark on the cultural landscape |
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Transhumance |
Migration where livestock are led to highlands areas in Summer months and lowland areas in Winter months. |
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Interregional Migration: |
movement within a region |
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Intraregional Migration: |
movement within a region |
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Chain Migration |
series of migrations within a group that begins with one person who through contact with the group, pulls people to migrate to the same area |
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Step migration |
migration to a far away place that takes place in stages |
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Guest Workers and Remittances |
Temporary migrants who often have legal permission to migrate for work or education related reasons. |
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An internally displaced person (IDP) |
is forced to migrate for similar reasons, but they do not cross international borders. |
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Rate of natural increase |
(birth rate - death rate)/10 - a positive NIR means a population is growing and a negative NiR means a population is shrinking |
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Brain drain: |
when the majority of educated or skilled workers leave an area to pursue better opportunities elsewhere |
