UNIT 2 Flashcards
migration and population (68 cards)
population effects…
food supply, pollution, and economic growth
LDC
less developed country
MDC
more developed country
demography
how people are distributed
where is 2/3 of the population?
East Asia, South Asia, Southeast Asia, Western Europe
(major population center)
what are the 4 major population centers?
East Asia, South Asia, Southeast Asia, Western Europe.
where do most population growths occur?
in LDCs
Ecumene
parts of the world people live in
Crude Birth Rate
total number of births in a year
Crude Death Rate
total number of deaths in a year
Natural increase rate
% of population growth in a year
how to calculate NIR?
CBR-CDR —> convert to %
why do LDC’s have higher birth rates?
parents have a lot of kids because they don’t expect their children to live
doubling time
how long it takes for a population to double
how to calculate doubling time?
growth rate divided by 70
total fertility rate
how many babies a women can have in her lifetime
infant mortality rate
babies that died under 1 year old
(want a low mortality rate)
as female education increases, population growth…
decreases
(more educated women don’t tend to have children)
population pyramids
graph representing the distribution of population by age and sex
technology innovations that increase population
agricultural, industrial, and medical revolution
DTM stage 1
high birth rate-high death rate= NIR=0
(CBR cancels CDR out=NIR 0)
DTM stage 2
high birth rate- low death rate=high NIR
DTM stage 3
lower birth rate- low death rate=lower NIR
(people choose not to have kids)
DTM stage 4
low birth rate-low death rate= low/ NIR= 0
(CBR declines to almost equal CDR)
