Population And Migration Flashcards
What is the demographic transition model (DTM)?
It is a graph that shows 5 stages of development in countries over the world. It shows how changes in birth rates and death rates affect population growth in countries.
What happens at the first stage of the DTM?
- Birth rates are high due to lack of contraception
- Death rates high due to poor diets and disease
- Population grows very slowly
What happens in the second stage of the DTM?
- Birth rates are high as children are needed for labour
- Death rates fall due to improved duets and healthcare
- Population grows rapidly
What happens in the third stage of the DTM?
- Birth rates fall due to growth of urban areas (so less labour is needed on farms)
- Death rates low due to good diets and healthcare
- Population growth is still rapid but starts to slow down nearer the end of stage 3
What happens in the fourth stage of the DTM?
- Birth rates low as women’s rights improve, and contraception becomes easily available
- Death rates low due to high-quality healthcare
- Population is stable
What happens in the fifth stage of the DTM?
- Birth rates fall as women choose higher education and careers over having children
- Death rates low due to continued medical advances
- Population declines slowly
What is natural population increase?
When the birth rate is higher than the death rate
What is natural population decrease?
When the death rate is higher than the birth rate
What is the birth rate?
The number of live births per thousand people of the population per year
What is the death rate?
The number of deaths per one thousand people per year
What is infant mortality?
The death rate of children under the age of one year
What is the life expectancy?
The average period that a person may expect to live
What is the dependent population?
Those who rely on the working population for support
What is the economically active population?
The fraction of a population that is either employed or actively seeking employment.
Give an example of a birth control policy (anti-natal)
China’s one child policy established in 1979