22 terms


Population pyramid
A graph which shows the age and sex structure of a place.
Ageing population
In the population structure of many MEDCs there is often a high proportion of elderly people who have survived due to advances in nutrition and medical care.
Birth rate
The number of live births per 1000 people per year.
A counting of people by the government every ten years to gather data for planning of schools, hospitals, etc.
Using birth control to stop pregnancy.
Death rate
The number of deaths per 1000 people per year.
Demographic Transition Model
Diagram which shows the relationship between birth and death rates and how changes in these affect the total population.
Dependency ratio
The ratio between those of working age and those of non-working age.
Distribution (of a population):
Where people are found and where they are not found.
Infant mortality:
The number of babies dying before their first birthday per 1000 live births.
Life expectancy
The average number of years a person born in a particular country might be expected to live.
Natural increase or decrease
The difference between the birth rate and the death rate.
Where there are too many people and not enough resources to support a satisfactory quality of life.
Population density
Number of people per square kilometre.
Sparsely populated
An area that has few people living in it.
Youthful population
In the population structure of LEDCs, there is often a higher proportion of young people due to high birth rates and a reduction in infant mortality due to better nutrition, education and medical care.
Youthful population structure
Seen as a wide base on population pyramids that reflect high birth rates in LEDCs.
Ageing population structure
A population pyramid with a narrower shape, broad at the top, found in MEDCs.
Having a population lower than is normal or desirable.
Replacement rate
The total fertility rate at which women give birth to enough babies to sustain population levels.
Fertility rate
The average number of children born per woman.
More Economically Developed Country

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