population Flashcards
population growth is the result of the balance between three variables…
Death rate
birth rate
migration
birth rate definition
the number of live babies born per thousand of the population per year
death rate definition
the number of deaths per thousand of the population per year
migration
the number of people moving in or out
formula for population density
number of people / area
what is population density measured in?
km^2
what are densely populated areas
areas of high population density
what are sparsely populated areas
areas of low population density
overpopulation definition
where there are too many people to be supported to a satisfactory level by the resources available
underpopulation definition
where there are too few people to make the most of the resources available
optimum population
where there are the right amount of resources for the right amount of people
where is rapid population growth more likely to happen
poorer countries
what do poorer countries have
high birth rates
falling death rate
what can cause overpopulation
rapid population growth
what is a youthful population
has a high dependency rate
what is a social impact of rapid population growth
services like health care cannot cope with large populations so not everybody can accesss them
children have to work to support their families so they miss out on education
what is a economic impact of rapid population growth
not enough jobs so unemployment increases
increased poverty because more people born into poverty
what is a political impact of rapid population growth
most of the population is made up of young people so the government focuses on young people
what is a environmental impact of rapid population growth
increased waste and pollution will release more greenhouse gases
more natural resources are used up
give examples of ways they have tried to control the rapid population growth
birth control programmes to reduce birth rates
immigration laws to control immigration
