Population Flashcards
crude death rate
Number of deaths in a population per thousand per year.
Crude birth rate
Number of live births per thousand in a population per year
Natural change
Difference between number f births and number of deaths in a place
Natural increase
When birth-rate is higher than death rate causing population to increase. unless more emigration.
Natural decrease
When birth-rate is lower than death rate causing population to decrease. Unless more immigration
Stage one- death rate
Death rate is high due to things such as lack of medical care and poor living conditions/ hygiene eg no toilets.
Stage one- Birth-rate
Birth rate is high as many children are born due to no contraception
Women marry young = more babies
Many children die before adulthood therefore people have many children to loom after them when they are too old to work
Also bring social staus.
Stage 1- birthrate and death rate hypothesis
Birth-rate and death rate fluctuate and are stable but total population is low
Stage 2- Death rates
Death rate falls rapidly- Improved medical care eg primary health care I.E vaccines and secondary healthcare I.E hospitals and doctors.
Scientific inventions eg for new drugs, better sanitation. Clean water
Stage 2 - birth rate
Economy still bases on farming so people still having lots of children to work.
Tradition of early marriage still influential
Stage 2- This means…
Population increasing rapidly.
Stage 2- examples
Afghanistan
Sierra Leone
Stage 3- Death rate…
Still falling
Further advances in medical care, diet improvements and clean water
Stage 3- Birth rate
Declines rapidly,
Less farming and improved family planning. more manufacturing jobs, children more likely to live to adulthood
women in education therefore marrying later.
Stage 3- Therefore…
Population growth slows down
Stage 3 examples…
Bangladesh
Stage 4- Death rates
Remain at low level due to good health care and crops
Stage 4- Birth rates
More access and emand to luxuries = less money for children.
Children = economic hindrance women put work first
Children have no children if they wish
Stage 4: Therefore..
rate of natural increase = small