Population Flashcards
What is exponential growth?
a pattern where the growth rate constantly increases
What is a ‘J’ curve?
continued exponential growth
What is a ‘S’ curve?
slowing down of growth in the future
Physical factors affecting distribution of population? (6)
- relief
- climate
- quality of soil
- vegetation
- accessibility
- natural resources
Human factors affecting population? (3)
- economic (jobs)
- Social (housing, healthcare, education, water)
- Political (stability, corruption)
Define ‘birth rate’
the number of live births per 1000 of the population per year e.g. Afghanistan 46.2// UK 10.7
Define ‘death rate’
the number of deaths per 1000 of the population per year e.g. Afghanistan 20// UK 10.1
Define ‘natural change’
the difference between BR and DR e.g. UK slow natural increase
Define ‘life expectancy’
the age to which you are expected to live e.g UK 81: male 79// female 83
Define ‘infant mortality’
the number of children who die before their first birthday e.g. Afghanistan 150 per 1000// UK 5 per 1000
What is the DTM?
The Demographic Transition Model:
- helps show changes in population sizes
- can be useful to predict changes in population for future needs
What are the limitations of the DTM?
- falling death rates in MEDC’s were due to medical discoveries and LEDC’s didn’t have these
- government policies may distort e.g. OCP
- based on progress in MEDC’s and LEDC’s may not follow this path
What are the 4 factors affecting population growth?
- Agricultural change
- Urbanisation
- Education
- Improving status of women
How does ‘agricultural change’ affect population growth?
- technology that improves yields, saves labour and leads to rapid economic growth =smaller families desirable
- industrial revolution required more workers= larger families desirable
How does ‘urbanisation’ affect population growth?
-cities have higher employment rates and so child labour is of less value in cities than rural
How does ‘education’ affect population growth?
- standard of living improves which makes it desirable to have less children
- fewer children means more money and time concentrated on them which gives them better chances
- children are economic disadvantages
How does ‘improving status of women’ affect population growth?
- 1/5th working women do not have children
- direct correlation between a women’s level of education and number of children she has (negative)
- good standard of living requires 2 incomes
- equality in the workplace improved
What are the characteristics of Stage 1 of a population pyramid? e.g. Amerindians
HIGH FLUCTUATING:
- very low life expectancy
- very high BR
- very high DR