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Population
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Population
Population
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Population
Population
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Population
Population
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Population

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  • 1. Population pyramid
  • 2. Pop Distribution <ul><li>Questions </li></ul><ul><li>Describe the population distribution in ‘your continent’ </li></ul><ul><li>How is the world pop distributed on Earth? </li></ul>Hint: Text pg10-11 Keywords DENSELY populated , SPARSELY populated, MODERATELY populated
  • 3. Important! Pop Density = Total Pop (No of people) Area (km ) 2 Class activity B 1. Calculate the pop density in your continents using the area as ‘1 chair = 1 sq km’ 2. Determine if your pop density is (a) Densely populated (b) Moderately populated (c) Sparsely populated And justify (explain) why Text page 11
  • 4. Factors affecting Pop Density Text page 12 & 13 *Factors Industry, Agriculture, Commerce, Transport, Politics, Religion Relief, Climate, Soil, Mineral resources, vegetation Human & Economic factors Physical factors Decisions made by people (System of trade to bring in $) Natural features of the Earth Definition Stable government, Good railway system, Banking sector (jobs), farming Flat land, High temperate and rainfall *Factors that leads to high density Singapore, Hong Kong (High) Africa (Low), Antarctica (Low) Countries
  • 5. Important! World Pop Growth Text pg 9 Qn: So what is natural decrease? Ans: BR is less than DR Average no of yrs person can expect to live Life expectancy No. of deaths per 1000 people in 1 year Death Rate (DR) No. of live births per 1000 people in 1 year Birth Rate (BR) BR - DR Natural Increase BR = DR Zero Pop Growth Total no of deaths in 1 yr for infant under 1 yrs old for every 1000 live birth Infant mortality rate
  • 6. World population growth <ul><li>1. High Rate of Increase </li></ul><ul><li>High BR + High DR </li></ul><ul><li>Although DR is high, there is still a high increase because no. of BIRTHS > DEATHS </li></ul><ul><li>2. Low Rate of Increase </li></ul><ul><li>Low BR + Low DR </li></ul><ul><li>No of births are insufficient </li></ul>
  • 7. <ul><li>High BR </li></ul>High DR Low BR Low DR
  • 8.  
  • 9. Case study
  • 10. CAUSES - 208 Imagine that you are the character above. Suggest reasons that you have caused your country to have a high or low pop growth. Hint (Text book 17 & 23) Zhiyu and Si kai, Sock Hwee and Claudia, Jeszmin and Regina Zikri and Yun qiao, Dexuan and Gjorn, Shaoqi and Wenwei Students
  • 11. A. Causes of HIGH rate of pop growth <ul><li>High BR </li></ul><ul><li>Early marriages </li></ul><ul><li>Children as wealth </li></ul><ul><li>Lack knowledge on birth control </li></ul><ul><li>Preference for male children </li></ul><ul><li>Religious beliefs </li></ul><ul><li>High DR </li></ul><ul><li>Lacking health care services (Results in high infant mortality rate) </li></ul><ul><li>Malnutrition </li></ul>e.g. China, India, South America Newspaper – needle in girl brain
  • 12. B. Causes of LOW rate of pop growth <ul><li>Low BR </li></ul><ul><li>Successful family planning programmes </li></ul><ul><li>Economic development </li></ul><ul><li>Late marriages </li></ul><ul><li>Prefer smaller families </li></ul><ul><li>High cost of living </li></ul><ul><li>Low DR </li></ul><ul><li>Medical advancement </li></ul><ul><li>Healthy living </li></ul>e.g. Singapore, Japan, Canada, Sweden Newspaper : Singapore pop pyramid
  • 13. CONSEQUENCES - 208 Imagine that you are the reporter above. Describe the situation that your country is in right now. Hint (Text book 17 & 23) Shuhui and James, Wendy and Ghim Boon, Bryan and Joshua Meici and Chee Yong, Jonathon and Yiwei, Jordon and Ming Hwee Students
  • 14. Consequences <ul><li>C. High pop growth </li></ul><ul><li>Overcrowding </li></ul><ul><li>Poverty </li></ul><ul><li>Shortage of food </li></ul><ul><li>Pressure on social services </li></ul><ul><li>Unemployment & social problems </li></ul><ul><li>D. Low pop growth </li></ul><ul><li>Ageing pop </li></ul><ul><li>Decreasing workforce (has to support more elderly) </li></ul><ul><li>Lower productivity </li></ul><ul><li>Needs more medical and social services </li></ul>
  • 15. RESPONSE/SOLUTION - 208 Imagine that you are the government minister above. Explain the policy that you have planned in response to the problem in your country. Hint (Text book 19 & 23) Geraldine and Weiting, Nina and Bella, Sally and Denise, Amerlyn and Priscillia Youngji and Iris, Kelvin and Weiming, Jun Hong and Jocelyn, Nabihah and Blessance, Gim Long and June Students
  • 16. Response / Solution <ul><li>E. High pop growth </li></ul><ul><li>China </li></ul><ul><li>Economic development strategies </li></ul><ul><li>Birth control & family planning </li></ul><ul><li>Education </li></ul><ul><li>$ incentives </li></ul><ul><li>F. Low pop growth </li></ul><ul><li>Singapore </li></ul><ul><li>Encourage marriage </li></ul><ul><li>Tax rebate </li></ul><ul><li>Infant care subsidy eg baby bonus </li></ul><ul><li>Text pg 27 </li></ul>
  • 17. Population Pyramid Old Young Working pop Important!
  • 18. <ul><li>Contracting, Beehive shape </li></ul><ul><li>Contracting base, Large apex </li></ul><ul><li>Low BR & DR </li></ul><ul><li>Long life expectancy </li></ul><ul><li>Expanding, Triangle Shape </li></ul><ul><li>Broad base, Narrow apex(top) </li></ul><ul><li>High BR & DR </li></ul><ul><li>Short life expectancy </li></ul>
  • 19.  
  • 20. Population Pyramid
  • 21.  
  • 22. All types of pyramid
  • 23. Changing pyramid shape
  • 24. Changes in 10 years
  • 25. Changes for male and females in 1975 & 2005
  • 26. Population Pyramid LDC DC Important!
  • 27. Population pyramid MCQ 1. The population pyramid of country A suggests that the country should spend much of its income on A Conservation B Military Defense C School Education D Road Transport E Flats for retired people <ul><li>Ans = C </li></ul><ul><li>LDC has high % of young children , so should focus on the education development </li></ul><ul><li>The other needs are more prioritized in a DC </li></ul>
  • 28. 2. Which of the following statement is true of Country A ? A There is a rapid rate of population growth B There is high male immigration C There is higher life expectancy for females D Most of the population are over 50 years of age <ul><li>Ans = A </li></ul><ul><li>LDC = high pop growth, DC = low pop growth </li></ul><ul><li>Male and female pop are almost balanced </li></ul><ul><li>Life expectancy = expected no of yrs of life (at a given age) </li></ul><ul><li>LDC has high DR, so low % of pop are over 50 yrs </li></ul>
  • 29. <ul><li>Which of the following best describes Country B ? </li></ul><ul><li>A Low birth rate, low death rate, decreasing population </li></ul><ul><li>B Low birth rate, high death rate, increasing population </li></ul><ul><li>C High birth rate, high death rate, decreasing population </li></ul><ul><li>D High birth rate, low death rate, no change in population </li></ul><ul><li>Ans = A </li></ul><ul><li>DC = Low BR & DR </li></ul><ul><li>LDC = High BR & DR </li></ul><ul><li>Natural increase = BR - DR </li></ul>
  • 30. 4. For Country A and B , the ‘ dependent ’ population is represented by A Males & females aged 0-14 B Males & females aged 65 and above C Males & females aged 0-14 and above 65 D Males & females aged 15-64 <ul><li>Ans = C </li></ul><ul><li>Dependent population = people who are not working and relies on working pop </li></ul><ul><li>Young dependents = 0-14 </li></ul><ul><li>Old dependents = 65 and above </li></ul><ul><li>Include both males and females </li></ul>
  • 31. <ul><li>  </li></ul>5. How does the population of Country A differ from the population of Country B? A It has a higher birth rate B It has a higher life expectancy C It has a smaller dependent population D It has more males than females <ul><li>Ans = A </li></ul><ul><li>LDC has high BR and DR </li></ul><ul><li>LDC has lower life expectancy because people do not live as long </li></ul><ul><li>LDC has higher dependent population (more young & old) </li></ul><ul><li>Males and females are almost balanced from diagram </li></ul>
  • 32. Additional questions <ul><li>What is the total number of people on Earth today? </li></ul><ul><li>List the top 5 countries with the most number of people. </li></ul><ul><li>Are there more girls or boys on earth ? </li></ul>
  • 33. Additional questions <ul><li>What is the total number of people on Earth today? </li></ul><ul><li>Ans: 6.8 million </li></ul><ul><li>List the top 5 countries with the most number of people. </li></ul><ul><li>Ans: China (1.3b), India (1.17b), US (0.3b), Indonesia (0.25b), Brazil (0.2b) </li></ul><ul><li>3. Are there more girls or boys on earth ? </li></ul><ul><li>Ans: More girls (live longer) </li></ul>

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