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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
Thomas Malthus' population Theory |
Population is growing faster than earth's food supply. The population is increasing geometrically while the food soupy is increasing arithmetically. |
Not enough food |
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Demographic transition model stage one |
The crude birth/death rate is high and has a fragile but stable population |
Preindustrial pre-agricultural |
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Demographic transition model stage two |
Lower death rates, the infant mortality rate falls, and the natural increase use very high. |
Improved agriculture and medicine |
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Demographic transition model stage three |
Indications of richer, developed countries with higher standards of living and education. |
Attitude change |
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Demographic transition model stage four |
Crude birth/death rates are low, the population is stable, and is aging |
Highest developed countries |
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Cause of overpopulation |
Reduced mortality rate, better medical facilities, Immigration |
Living longer |
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Effect of overpopulation |
Depletion of Natural Resources, Degradation of Environment, Conflicts and Wars |
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Arithmetic population density |
total number of people divided by the total land area |
Math |
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Physiologic population density |
Number of people per unit area of arable land. |
Farming |
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Natural increase |
the difference between the number of live births and the number of deaths occurring in a year |
Population |
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Dependency ratio |
A measure showing the number of dependents (aged 0-14 and over the age of 65) to the total population (aged 15-64) |
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Doubling time |
period of time required for a quantity to double in size or value |
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Percentage of population living in cities |
53% |
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Ravenstein's migration laws |
Most migrants move only a short distance.There is a process of absorption, whereby people immediately surrounding a rapidly growing town move into it and the gaps they leave are filled by migrants from more distant areas, and so on until the attractive force [pull factors] is spent.There is a process of dispersion, which is the inverse of absorption.Each migration flow produces a compensating counter-flow.Long-distance migrants go to one of the great centers of commerce and industry.Natives of towns are less migratory than those from rural areas.Females are more migratory than males.Economic factors are the main cause of migration. |
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Neo-malthusians |
Believed that the transfer of medical technology leases to a rapid increase in population of poorer countries. The world's population is outstripping a wide variety of resources. Wars and civil violence will increase because of scarcity of food and other resources. |
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Intercontinental migration |
migration flow involving movement across international borders |
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International migration |
migration flow within a nation-state, such as ongoing westward and southward movements in the US |
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Interregional migration |
migration flow within a certain country or state |
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Interurban migration |
of, located in, or operating between two or more cities or towns. |
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