20 terms

IGCSE Geography Population

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Population
The number of people living in an area.
Ageing population
The increasing percent of population is over sixty.
Youthful population
A youthful population is a large number of young people due to high birth rates and a decrease in infant mortality.
Birth rate
The number of live births per 1000 people per year.
Death rate
The number of deaths per 1000 people per year.
Fertility rate
The average number of children women have in a life time.
Growth rate
The difference between the birth rate and the death rate.
Infant mortality
The proportion of children dying at birth or before their first birthday.
Life expectancy
The average number of years people can expect to live.
Voluntary migration
This is when people move of their own free will they're usually trying to find a better standard of living.
Forced migration
This is when people have no choice they either move, face extreme hardship or even death. this is common when there is a natural disaster or war. These migrants are called refugees.
Permanent migration
This is when people move forever to find a new place to live.
Temporary migration
This is when people don't move forever - they always intend to go home at some point in the future.
Migrant
Some one who is living away from home.
Population pyrimid
The population pyramid is a graphical illustration that shows the distribution of various age groups in a population, which forms the shape of a pyramid when the population is growing
Population change
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The demographic transition model (DTM)
It is a diagram of how population has changed over time including birth rate, death rate and total population, it is split in to 5 stage.
Over-population
Is when a country does not have the resources to give all its people on adequate standard of living.
Under-population
Describes an area where the population is well below that which can be supported by it's natural resources.
Over-population reasons
-Lack of clean water
-Droughts
-Loss of jobs
-Population growth
-Clearing of forested areas
-Natural disasters