KEY TERMS - population change Flashcards
global population
the number of human beings on the planet
natural increase
growth in the population caused by the birth rate being higher than the death rate in a given place
natural change
changes to the population caused only by births and deaths and not migration
natural decrease
a fall in the population caused by the birth rate being lower than the death rate in a given place
birth rate
the number of babies born per 1000 women in a population per year
death rate
the number of deaths per 1000 people in a population in a year
NIC
newly developed country
LEDC
less developed country
DTM
demographic transition model
demographic transition model
measures population change over time by studying birth and death rates in a country
sustainable population
a population at the size which can allow for the needs of living today without compromising the lives of those in the future
transmigration
moving people from one area to another to enable them to have a better life (hopefully!)
aging population
when a large proportion of the population is old.
dependency ratio
number of dependant people (%) / number of independent people (%) x 100
independent people
people who work and provide enough money to live off
dependant people
people who do no/cannot work and so rely of others or the state of provide for them
push factors
reasons why people leave an area
pull factors
reasons why people move to an area
migration
when people move to a different area to live
rural-to-urban migration
the movement of people to the towns and cities from the countryside
international migration
when people move from 1 country to another
internal migration
when people move to a different part of the same country
forced migration
when people have to migrate against there choice due to things like: war and natural disasters
voluntary migration
when people choose to migrate because they want to live in a better house or be nearer to family
