Population Flashcards
Population density
The number of people per unit area, usually per square kilometres
Population distribution
The variation in population densities over wide areas
Population structure
The ratio of age groups, by gender, within a population
Demography
The study of demographics
Demographics
The statistical characteristics of a population, births, deaths, age/gender structure etc
Birth rate
Number of live births in a year per 1,000 population
Death rate
Number of deaths in a year per 1,000 population
Annual growth rate
The rate at which a population is increasing owing to natural increase and migration- birth rate minus death rate plus or minus migration- usuall expressed as a %
Natural increase
The number of people added to, or lost from, the population per year, for every 1,000 people- birth rate minus death rate - can be a negative number
Infant mortality rate
The number of babies out of every 1,000 that dies before the age of 1 per year
Life expectancy
The average number of years a person is expected to live
Fertility rate
The amount of live births by women from the age of 15 to 45 per year -expressed as a %
Migration
The movement of people born one country or locality to another
Net migration rate
The difference between the number of in-migrants and out-migrants in an area
Ageing population
The increasing average age of the population, together with an increasing proportion of people over the age of 65
