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Population terms
Key terms
Term | Definition |
---|---|
Birth rate per thousand | The average number of births per 1000 people in the population per year |
Death rate per thousand | The average number of deaths per 1000 people in the population per year |
Life expectancy | The average nuber of years a person is expected to live |
Population density | The average number of people per square kilometre |
Emigrate | When someone leaves a country |
Natural increase | The birth rate minus the death rate |
Population pyramid | A graph showing how the population is composed of different genders and age groups |
Refugees | People who are forced to migrate |
Zero population growth | When the birth rate is equal to the death rate |
Distribution | How people are spread out |
Population density | The nuber of people in an area |
Demographic transition model | A graph used to show population changes |
Infant mortality | The number of children out of every 1000 born alive who die before the age of one |
Population structure | The number of males and femeles within different age groups in a population |
Dependency ratio | % of people who are working (economically active) / % people whow are dependent (young and old) |