2 Population Flashcards
demography
the study of population numbers, distribution, trends and issues
developed country
the world’s wealthiest countries; they have well-established infrastructures and their people are well-housed, healthy, and have good literacy skills
developing country
countries that have lower standards of living than developing countries; many have extensive poverty
birth rate
the number of births per 1000 people in a country in a given year
death rate
the number of deaths per 1000 people in a country in a given year
immigration rate
the number of new arrivals in a country in a given year per 1000 people
emigration rate
the number of people leaving a country in a given year per 1000 people
natural increase
the rate at which a population increases (or decreases) in a year expressed as a percentage of the total population; calculated by subtracting the death rate from birth rate
exponential growth rate
a rapid rate of population growth as each generation doubles in size
rule of 70
the time it takes a country to double its population, approximately 70 divided by the country’s growth rate
doubling time
the number of years it takes a country to double its population at its current growth rate
net migration
the difference between the number of people immigrating to a country, and the number of people emigrating
population growth rate
the rate at which a country’s population increases or decreases, calculated by adding natural increase and net migration
life expectancy
the average number of years an individual is expected to live
demographic transition model
a model that shows changes in a population’s birth and death rates and growth based on technological development