Topic: Population Pyramids Aim: What can the analysis of Population Pyramids reveal about a country?
Population studies - Population Pyramids
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+ Populati on Pyramids
description
For Sec 2 Geography
Transcript of Population studies - Population Pyramids
+Population Pyramids
+What is it?
A type of graph that shows the distribution of various age groups in a population.
Different shapes can tell us if: A country is facing very high/low birth rates A country is suffering from growing/aging
population Indicates good/poor health and medical care Level of development
+General Structure
The left side of each pyramid shows the number of men in each age group
The right side shows the number of women
The longer the line, the more no. of people there are in that age group
+3 main shapes
Triangle Hexagon Cup
+TriangleDeveloping Country
Most countries in Africa
Widest btw 0 – 20 yrs old = High Birth Rates
Narrowest at > 60 yrs =Low life expectancy
+TriangleDeveloping Country
+HexagonDeveloped Country (Population still growing)
United StatesSingaporeCanadaUK
Widest btw 20 – 60 yrs old = Decreasing BRs
Broadening top = Increasing life expectancy
+HexagonDeveloped Country (Population still growing)
+Cup ShapedDeveloped Country (Population Aging)
JapanItalyGermany
Narrowest at the base = low birth rates
Widest at >60 yrs = Aging population
+Cup ShapedDeveloped Country (Population Aging)
Singapore1955 1980 2010
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