population Flashcards
global population density definition
the average number of people living in a given area (for example squarr kilometer)
how to calculate population density
population:area=people/km²
global population map
densely populated areas: india, east china, japan, indonesia
sparsely populated: sahara desert, amazon rainforest, greenland, north of russia (siberia)
factors causing dense and spare population (human)
political(poor public services, including education and healthcare)
civil war and persecution
government corruption
social (crimes, job availability)
economical (agriculture)
industry development
factors causing dense and spare population (physical)
terrain
accesability
availability of natural resources
water supply
climate
soils
vegetation
mineralbasins
chances of diseases and pests
crude birth rate
the number of live births per 1000 midyear population
crude death rate
indicates the number of deaths per 1000 midyear population
fertility rate
total number of children that would be born to each woman if she were to live to the end of her child-bearing years and give birth to children in alignment with the prevailing age - specific fertility rates
child mortality rate
the probability of dying between birth and exactly 5 years of age exoressed per 1000 live births
infant mortality rate
the probability of a child born in a specific year or period dying before reaching the age of 1
life expectancy
the number of years a person can expect to live
demography
study of demographics, the social characteristics and statistics of a human population
population explosion
rapid increase in the number of people in an area
depopulation
the action of causing a county or area to have fewer people living in it
demographic composition
the proportion or number of people who can be identified according to a certain characteristic
population aging
a shift in the distribution of a countries population towsrds older people
NIR (natural increase rate)
the difference between the number of births and deaths in a population
NDR (natural decrease rate)
opposite of NIR, more people are dying than babies are born, which can cause a population to shrink
MEDCs
more economically developed countries (have a high standart of living and a large GPD (bendras vidaus produktas)
LEDCs
less economically developed countries (weak economy system, low GPD)
funnel population pyramid
stage 2 (high birth rate, high death rate, young population)
triangle population pyramid
stage 3 (decreasing birth rate and death rate, young population that increases slowly)
bell population pyramid
4 stage (high birth rate, low death rate
urn population pyramid
5 stage (same features as bell shape just lower birth rate and older population)
examples of stage 1
no countries so far
examples of stage 2
central africa, afghanistan
examples of stage 3
south america, north africa, south-(east) asia
examples of stage 4
western-northern european countries, scandinavia, north america, china, australia, new zealand
examples of stage 5
japan, eastern, central, south europe
