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Population Trends and Patterns


Explain population trends and patterns in births (crude birth rate), natural increase and mortality (crude death rate, infant and child mortality rates), fertility and life expectancy in contrasting regions of the world.

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Population Trends and Patterns


Explain population trends and patterns in births (crude birth rate), natural increase and mortality (crude death rate, infant and child mortality rates), fertility and life expectancy in contrasting regions of the world.

 
 
 

GRAPHING ACtivity - trends and patterns

 
 

demographic transition

 
 

further reading and notes

Read and make notes on pp 1-8 Guinness Patterns and Change eBook

 
 

the components of population change

  1. Read pp 9-11 Guinness HL Book
  2. Make a mind map explaining the demographic, socio-cultural, economic and political factors affecting fertility
  3. Read p 13
  4. Answer q 1-5
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Population Pyramids


Analyse population pyramids

Population Pyramids


Analyse population pyramids

Population pyramids: powerful predictors of the future

 
 
 
 
Population pyramids in 2009 (Source)

Population pyramids in 2009 (Source)

 
 
 
 
 
 
 

task

  1. Read pp 17-19 Patterns and Change book.
  2. Highlight example phrases for describing pyramids.
  3. Make detailed notes.
 
 
 

EXAM PRACTICE

When describing population structure from population pyramids focus on:

  • number of dependents vs economically active:
    • proportion of economically active (16-64) vs proportion of economically inactive (0-15 & 65+)
  • gender balance / number of males vs females in each of the groups (young dependent, economically active, old dependents)
  • ALWAYS INCLUDE DATA FROM THE GRAPH

Describe the population structure of this country in 2025 [3 marks]

 

Describe the population structure of this country [3 marks]

 
 

plenary

Can you guess what will be mentioned in this video summary of how population pyramids have changed? 

population family size.jpg

Population Momentum


Explain population momentum and its impact on population projections

Population Momentum


Explain population momentum and its impact on population projections

Population momentum is the tendency for population to grow despite a fall in the birth rate or fertility levels. It is also the tendency for a population to continue to fall despite a rise in the birth rate.
— IB Geography Course Book (Nagle & Cooke)

Population momentum occurs because of a relatively high concentration of people in the pre-childbearing age and childbearing years. As these young people grow older and move through their reproductive years, the greater number of births will exceed the the number of deaths in the older populations, and so the population will continue to grow.

Source: IB Geography Textbook (Nagle)

 
 
 

Examine the differences of population momentum in Bangladesh, Uganda and Germany.

 
 
 

Exam Question

Distinguish between a population projection and population momentum. (2 marks)