1.5 family demographics key terms Flashcards
What is the infant mortality rate?
the number of deaths of babies in their first year of life per 1,000 live births per year
What is the death rate?
the number of deaths per 1,000 of the population per year
What is meant by life expectancy?
an estimate of how long the average person can be expected to live -> estimates of life expectancy can be based on age, but the most common are life expectancy at birth and at one year
What is meant by dependent population?
that section of the population which is not in work and is supported by those who are, such as the under-18s(who are still at school or in training); pensioners; the unemployed and others living on welfare benefits
Who are the dependent age groups?
are those under 17 (age 18 from 2015) in compulsory education, and those over retirement age
What is migration?
changing the country of usual residence for a period of at least a year, so that the country of destination effectively becomes the country of usual residence
What is immigration?
entering another country for a period of at least a year, so that country becomes the one of usual residence
What is emigration?
leaving the usual country of residence for another country for a period of at least a year, so that the country of destination becomes the one of usual residence
What is net migration?
the difference between immigration and emigration, and therefore whether the population of a country or area has gone up or gone down when both emigration and immigration are taken into account -> net migration is usually expressed in terms of a net gain or increase or a net loss or decrease of population
What is natural population change?
changes in the size of a population due to changes in the number of births and deaths,excluding migration -> expressed as a natural increase or decrease in population
What are population projections?
predictions of future changes in population size and composition based on past and present population trends
What is the birth rate?
the number of live births per 1,000 of the population each year
What is the fertility rate?
a general term which is used to describe either the general fertility rate or the total fertility rate
What is the general fertility rate?
the number of live births per 1,000 women of child-bearing age (15-44) per year
What is the total fertility rate (TFR)?
the avg number of children women will have during their child-bearing years -> the number of births in any society depends on both the fertility rates of women and the numbers of women of child-bearing age
