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Population Pyramids

IB DP Geography
       
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Base Knowledge and Understanding

Base knowledge and understanding

 

populationpyramid.net

Population Pyramids of the World: 1950-2050 at populationpyramid.net

Video Clip
Data Visualization
   
Definition age-sex pyramid
dependency ratio
ageing ratio
pre-reproductive
reproductive
pre-industrial society
News Article
Words to be defined
 
Base Level

Context

 

The aim of this lesson:

  • To be able to analyses population pyramids.
  • To be able to explain dependency and ageing ratios.
 

Match the Population Pyramid with the Country

Population Pyramid
Population Pyramid
Population Pyramid
Population Pyramid
Population Pyramid
Population Pyramid
Population Pyamid
 
Australia
United States of America
United Kingdom
China
Morocco
Haiti
Niger
 
 
Geography Activities

Synthesis

 
Geography Activities
Geography Activities

Population Pyramids

Copy the following pyramids and table into your notes:
 
Population Pyramids
Expansive
Expansive
Stationary
Contractive
DTM 2
DTM 3
DTM 4
DTM 5
Concave sides.
Straight sides.
Convex sides.
Convex sides.
High birth rate.
Still high birth rate.
Declining birth rate.
Very low birth rate.
High death rate.
Falling death rate.
Low death rate.
Low death rate.
Short life expectancy.
Slightly longer life expectancy.
Long life expectancy.
Longer life expectancy.
Rapid fall in each upward age group due to high DR.
Fall in DR so more people living into middle age.
An increasing proportion of the population is in the 65+ age group.
Higher dependency ratio.
Niger
Haiti
Morocco
Australia
Economic development increases >>>>
 
Geography Activities
Geography Activities

Dependency Ratio

Copy the following notes:

Dependency Ratio

 

The dependency ratio tells you how many economically inactive people (0-15 and 65+) are dependent upon the economically active population (16 to 64).

The equation above calculates a figure which shows the number of economically inactive people that are reliant on 100 economically active people. So a result such as 81.8 would mean that for every 100 economically active people there are 81.8 economically inactive people.

 
Copy and complete the following table:
Country
% of country's population in 0-15 age bracket
% of country's population in 65+ age bracket
% of country's population that is economically active
Dependency Ratio
Australia
18.9
13.9
United States of America
20.2
13.0
United Kingdom
17.4
16.6
China
19.9
8.2
Morocco
28.0
5.4
Haiti
35.9
4.4
Niger
50.1
2.0
 
Geography Activities
Geography Activities

Ageing Ratio

Copy and complete task:
The Ageing Ratio is the proportion people 65 years old and over to the total population. Work out the Ageing Ratio for the seven countries in the table above.
 
Geography Activities
Geography Activities

Ageing Ratio

Dependency Ratios, Australia, 1901-2011
Source
 
Can you describe and explain the patterns show in Australia's dependency ratios since 1950?
 
Geography Review

Review

 
Geography Activities
Geography Activities

Exam Style Question > Youthful and Ageing Population

2010 Niger Population Pyramid
2050 Niger Population Pyramid
2010 Australia Popuation Pyramid
2050 Australia Population Pyramid
 
  1. Describe the population pyramid for Niger for 2010. [3 Marks]
  2. Describe the population pyramid for Australia for 2010. [3 Marks]
  3. Compare the population structure shown in the year 2010 demographic pyramids. [4 Marks]
  4. Demographic structure can be used to demonstrate stages of development.  Explain how the population pyramids show that Australia is more developed than Niger. [5 Marks]
  5. With reference to the population change shown between Niger 2010 and Niger 2050, what considerations will need to be made in the provision of services and employment between 2010 and 2050? [5 Marks]
  6. With reference to the population change shown between Australia 2010 and Australia 2050, what considerations will need to be made in the provision of services and employment between 2010 and 2050? [5 Marks]
 

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