Natural Population Change
Fig 1.5 Demographic transition model
- Use pages 396 to 398 to define the terms:
Take a copy of the DTM model and insert into your notes.
- Crude birth rate:
- Crude death rate:
- Natural increase:
- Doubling time:
Population growth and momentum
Fig 1.5 Population momentum
- Watch fig 1.6:
- Summarise the main points that are made about population growth and momentum.
- Describe the geographical location of the countries that will continue to have the largest growth.
- Watch video 1.3 (below) and explain why saving the poorest children is key to reducing population growth.
Video 1.2 Stable populations
Video 1.3 Saving poor children
Fig 1.6 Developing country population pyramid
Fig 1.7 Developed country population pyramid
Population Pyramids are a way of displaying the demographic make up of a country in a simple graph.
They show the number of males and females in each age group.
Population pyramids are important because they allow governments to predict future population patterns and plan for the changes.
They also give a good indication of the level of development in a country.