The increase in life expectancy over a period of time. It is a direct result of improved medical provision and increased levels of economic development. People live longer and this creates an older population
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Natural Change
The change in size of a population caused by the interrelationship between birth and death rate e.g. if birth rate exceeds death rate, a population will increase
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Birth Rate
A measure of fertility. The number of live births per 1000 people in one year
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Fertility
The number of live births per 1000 women aged 15-49 in 1 year. It is also defined as the average number of children each woman in a population will bear. If this number is 2.1 or higher, a population will replace itself
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infant Mortality Rate
The number of deaths of children under the age of 1 year expressed per 1000 live births per year
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Forced Migration
The migrant has to migrate because of circumstances
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International Migration
The UN defines international migration as the movement of people across national frontiers, for a minimuim of 1 year
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Migration
A permanent or semi-permanent change of residence of an individual or group of people
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Net Migration
The difference between the numbers of in-migrants and out-migrants in an area. When in-migrants exceed out-migrants, there is net migrational gain. When out-migrants exceed in-migrants, there is a net migrational loss
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Rural-Urban Migration
In more less developed countries, the net migrational gain of urban areas at the expense of rural areas results in urbanisation
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Urban-Rural Migration
In more developed countries, movements from urban areas to rural areas have led to counter-urbanisation
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Voluntary Migration
The migrant makes the decision to migrate
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Population Structure
The proportion if males and females in an area, usually in the form of age distribution
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Population Density
The number of people in an area. The density of population is obtained by dividing the total population of a country (or region) by the total area of that country (or region)
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Other cards in this set
Card 2
Front
The increase in life expectancy over a period of time. It is a direct result of improved medical provision and increased levels of economic development. People live longer and this creates an older population
Back
Longevity
Card 3
Front
The change in size of a population caused by the interrelationship between birth and death rate e.g. if birth rate exceeds death rate, a population will increase
Back
Card 4
Front
A measure of fertility. The number of live births per 1000 people in one year
Back
Card 5
Front
The number of live births per 1000 women aged 15-49 in 1 year. It is also defined as the average number of children each woman in a population will bear. If this number is 2.1 or higher, a population will replace itself
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