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Population Population Presentation Transcript

  • Population pyramid
  • Pop Distribution
    • Questions
    • Describe the population distribution in ‘your continent’
    • How is the world pop distributed on Earth?
    Hint: Text pg10-11 Keywords DENSELY populated , SPARSELY populated, MODERATELY populated
  • 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 View slide
  • 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 View slide
  • 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
  • World population growth
    • 1. High Rate of Increase
    • High BR + High DR
    • Although DR is high, there is still a high increase because no. of BIRTHS > DEATHS
    • 2. Low Rate of Increase
    • Low BR + Low DR
    • No of births are insufficient
    • High BR
    High DR Low BR Low DR
  • Case study
  • 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
  • A. Causes of HIGH rate of pop growth
    • High BR
    • Early marriages
    • Children as wealth
    • Lack knowledge on birth control
    • Preference for male children
    • Religious beliefs
    • High DR
    • Lacking health care services (Results in high infant mortality rate)
    • Malnutrition
    e.g. China, India, South America Newspaper – needle in girl brain
  • B. Causes of LOW rate of pop growth
    • Low BR
    • Successful family planning programmes
    • Economic development
    • Late marriages
    • Prefer smaller families
    • High cost of living
    • Low DR
    • Medical advancement
    • Healthy living
    e.g. Singapore, Japan, Canada, Sweden Newspaper : Singapore pop pyramid
  • 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
  • Consequences
    • C. High pop growth
    • Overcrowding
    • Poverty
    • Shortage of food
    • Pressure on social services
    • Unemployment & social problems
    • D. Low pop growth
    • Ageing pop
    • Decreasing workforce (has to support more elderly)
    • Lower productivity
    • Needs more medical and social services
  • 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
  • Response / Solution
    • E. High pop growth
    • China
    • Economic development strategies
    • Birth control & family planning
    • Education
    • $ incentives
    • F. Low pop growth
    • Singapore
    • Encourage marriage
    • Tax rebate
    • Infant care subsidy eg baby bonus
    • Text pg 27
  • Population Pyramid Old Young Working pop Important!
    • Contracting, Beehive shape
    • Contracting base, Large apex
    • Low BR & DR
    • Long life expectancy
    • Expanding, Triangle Shape
    • Broad base, Narrow apex(top)
    • High BR & DR
    • Short life expectancy
  • Population Pyramid
  • All types of pyramid
  • Changing pyramid shape
  • Changes in 10 years
  • Changes for male and females in 1975 & 2005
  • Population Pyramid LDC DC Important!
  • 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
    • Ans = C
    • LDC has high % of young children , so should focus on the education development
    • The other needs are more prioritized in a DC
  • 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
    • Ans = A
    • LDC = high pop growth, DC = low pop growth
    • Male and female pop are almost balanced
    • Life expectancy = expected no of yrs of life (at a given age)
    • LDC has high DR, so low % of pop are over 50 yrs
    • Which of the following best describes Country B ?
    • A Low birth rate, low death rate, decreasing population
    • B Low birth rate, high death rate, increasing population
    • C High birth rate, high death rate, decreasing population
    • D High birth rate, low death rate, no change in population
    • Ans = A
    • DC = Low BR & DR
    • LDC = High BR & DR
    • Natural increase = BR - DR
  • 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
    • Ans = C
    • Dependent population = people who are not working and relies on working pop
    • Young dependents = 0-14
    • Old dependents = 65 and above
    • Include both males and females
    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
    • Ans = A
    • LDC has high BR and DR
    • LDC has lower life expectancy because people do not live as long
    • LDC has higher dependent population (more young & old)
    • Males and females are almost balanced from diagram
  • Additional questions
    • What is the total number of people on Earth today?
    • List the top 5 countries with the most number of people.
    • Are there more girls or boys on earth ?
  • Additional questions
    • What is the total number of people on Earth today?
    • Ans: 6.8 million
    • List the top 5 countries with the most number of people.
    • Ans: China (1.3b), India (1.17b), US (0.3b), Indonesia (0.25b), Brazil (0.2b)
    • 3. Are there more girls or boys on earth ?
    • Ans: More girls (live longer)