Population Dynamics Flashcards
What is the main reason for global population increase?
The fall in death rate.
What do some predict with happen to population in the 2020s?
Population growth will be zero.
What do some predict the population will be in 2100?
10 billion
What happens in stage one of the demographic transition model?
Why?
High fluctuating.
There are high birth rates and death rates.
There’s no birth control and children needed to work.
There are frequent famines and outbreaks of disease.
What happens in stage 2 of the dtm?
Why
Early expanding.
There are still high birth rates but falling death rates.
There is improved hygiene, improved health care, improved nutrition, safer drinking water and better sewage disposal.
What happens in stage 3 of the dtm?
Why?
Late expanding.
There are falling birth rates and falling death rates.
Birth rates falling because of birth control, less children dying, preference for smaller families.
What happens in stage 4 of the dtm?
Why?
Low fluctuating
There are low birth rates and death rates.
Low birth: Because women are delaying having a family and there’s birth control.
Low death: there is improvement in health care.
What happens in stage 5 of the dtm?
Why?
Decline.
There’s a slightly rising death rate and a low birth rate.
There are fewer young people so fewer families.
More old people.
What can we see from a population pyramid?
Short term factors that effect population.
Show what stage of the dtm a country is at.
Show what age group is predominant.
What does a pyramid with a wide base and a narrow top mean?
That there’s a high birth rate and a shorter life expectancy and a youthful population.
What does a pyramid with a wide too and narrow base mean?
There’s a low birth rate and an ageing population.
What does it mean if there are similar numbers in each age group on a pop pyramid?
That there’s a low death rate.
What is the problem with an ageing population?
More money is needed for state pensions, social provision (meals on wheels and home help) and medical provision (care homes and professionals to help with diseases like dementia).
What is the problem with a youthful population?
More money is need for social provisions: schools, maternity leave and playgrounds.
And medical provisions.
List three problems for the elderly in the uk
- loneliness when partners die
- difficulty getting around if no public transport
- high cost of care homes
