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Population Structure

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Population Structure

1. 1. Population Structure <ul><li>Discuss the following with the people next to you. </li></ul><ul><li>Definitions of CBR, CDR, IMR, Life Expectancy, Population Density, Population Distribution. </li></ul><ul><li>Countries that you would expect to find at stages 1-5 of the DTM and reasons for your choices. </li></ul>Do Now
2. 2. Ok let’s check your answers <ul><li>Definitions </li></ul><ul><li>Use CIA World Factbook to check and see if your suggestions for countries in each stage of the DTM are accurate i.e. do they have the appropriate CBR’s and CDR’s </li></ul>
3. 3. Population Structure (Pop. Pyramids) <ul><li>You need to understand…… </li></ul><ul><li>The ratio of young people to old people (and between all age groups) in a population is known as the population structure. </li></ul><ul><li>Population pyramids represent population structure. </li></ul><ul><li>Population structure has important effects on a populations needs and abilities </li></ul><ul><li>Each stage of the DTM has a different population structure that can be represented by a population pyramid shape </li></ul>
4. 4. Read pages 8 and 9 of NWW <ul><li>You have 10mins </li></ul>
5. 5. Interpreting Population Pyramids <ul><li>Basic </li></ul><ul><li>In class you will be provided with one population pyramid for France and one for Kenya and you will need to place various descriptive sentences to the pyramids. </li></ul><ul><li>Advanced </li></ul><ul><li>Once you have mastered the basics of interpreting pop. Pyramids then you will attempt to place various ‘real life’ scenarios on to either the UK pyramid or the Philippines pyramid much the same way as we did for the DTM. </li></ul>
6. 6. The Effects of Population Structure <ul><li>For any one of the countries that we looked at list 5 advantages and 5 disadvantages of having it’s population structure </li></ul>
7. 7. Calculating the Dependency Ratio <ul><li>The dependency ratio is simply the number of people of non working age (very old + very young) divided by the number of people of working age. </li></ul><ul><li>The point is to see if there are enough people working to support those who are not working </li></ul><ul><li>children (0-14) + elderly (65+) </li></ul><ul><li>Those of working age (15-64) </li></ul><ul><li>The resulting figure gives the number of people not working for every 100 working people. </li></ul>X 100
8. 8. Homework <ul><li>Use CIA World Factbook to get the data you need to calculate the dependency ratio’s of </li></ul><ul><li>The Democratic Republic of Congo </li></ul><ul><li>India </li></ul><ul><li>Colombia </li></ul><ul><li>Singapore </li></ul>