Population – borough wide. Population growth Population by ward in 2017.
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Transcript of Population
Population pyramid
Pop DistributionQuestions
1. Describe the population distribution in ‘your continent’
2. How is the world pop distributed on Earth?
Hint: Text pg10-11
Keywords
DENSELY populated ,
SPARSELY populated,
MODERATELY populated
Pop Density = Total Pop (No of people)Area (km )2
Important!
Class activity B1. 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
*Factors Relief, Climate, Soil, Mineral resources, vegetation
Industry, Agriculture, Commerce, Transport, Politics, Religion
Factors affecting Pop DensityText page 12 & 13
Physical factors Human & Economic factors
Definition Natural features of the Earth
Decisions made by people (System of trade to bring in $)
*Factors that leads to high density
Flat land, High temperate and rainfall
Stable government, Good railway system, Banking sector (jobs), farming
Countries Africa (Low), Antarctica (Low)
Singapore, Hong Kong (High)
Important!
Life expectancy Average no of yrs person can expect to live
World Pop Growth Text pg 9
Qn: So what is natural decrease?Ans: BR is less than DR
Birth Rate (BR) No. of live births per 1000 people in 1 year
Death Rate (DR) No. of deaths per 1000 people in 1 year
Natural Increase
BR - DR
Zero Pop Growth
BR = DR
Infant mortality rate
Total no of deaths in 1 yr for infant under 1 yrs old for every 1000 live birth
World population growth1. 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
Country China SingaporeType of development Less developed country Developed countryRate of pop growth High Low
Character A BName Zhang Jie Jennifer TanAge 33 30Occupation Farmer AccountantFinancial Status Not stable (Depends on crops output) Stable and well paidNumber of family members 10 (1 wife, 7 children, 2 parents) 2 parents (not married)Religion Buddhist (Belief forbids contraceptives) Free thinkerSocial / Culture Favors boys High cost of living
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)
Students Zhiyu and Si kai, Sock Hwee and Claudia, Jeszmin and Regina
Zikri and Yun qiao, Dexuan and Gjorn, Shaoqi and Wenwei
A. Causes of HIGH rate of pop growth
High BREarly marriagesChildren as wealthLack knowledge
on birth controlPreference for
male childrenReligious beliefs
High DRLacking health
care services (Results in high infant mortality rate)
Malnutrition
e.g. China, India, South AmericaNewspaper – needle
in girl brain
B. Causes of LOW rate of pop growth
Low BRSuccessful family
planning programmes
Economic development
Late marriagesPrefer smaller
familiesHigh cost of living
Low DRMedical
advancementHealthy living
e.g. Singapore, Japan, Canada, Sweden
Newspaper : Singapore pop pyramid
Country China SingaporeType of development Less developed country Developed countryRate of pop growth High Low
Character C DName Zhang Jia Jessica TanOccupation Reporter of 'The Beijing Times' Reporter of 'The Hougang Times'Economy Unemployment Decreasing workforceSocial issues Lack of services and education Ageing populationOthers Overcrowding Lowering productivity
CONSEQUENCES - 208
Imagine that you are the reporter above. Describe the situation that your country is in right now. Hint (Text book 17 & 23)
Students Shuhui and James, Wendy and Ghim Boon, Bryan and Joshua
Meici and Chee Yong, Jonathon and Yiwei, Jordon and Ming Hwee
Consequences
C. High pop growthOvercrowdingPovertyShortage of foodPressure on social
servicesUnemployment &
social problems
D. Low pop growthAgeing popDecreasing
workforce (has to support more elderly)
Lower productivityNeeds 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)
Country China SingaporeType of development Less developed country Developed countryRate of pop growth High Low
Character E FName Zhang Ji Jeslyn TanOccupation Government Minister Government MinisterPolicy One child policy Have 2 or moreEconomy Create more jobs Tax rebate, attract foreignersSocial Family planning Encourage marriage
Students 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
Response / Solution
E. High pop growthChinaEconomic
development strategies
Birth control & family planning
Education$ incentives
F. Low pop growthSingaporeEncourage
marriageTax rebateInfant care
subsidy eg baby bonus
Text pg 27
Population Pyramid
Old
Young
Working pop
Important!
Expanding, Triangle ShapeBroad base, Narrow apex(top)High BR & DRShort life expectancy
Contracting, Beehive shapeContracting base, Large apexLow BR & DRLong life expectancy
Population Pyramid
All types of pyramid
Changing pyramid shape
Changes in 10 years
Changes for male and females in 1975 & 2005
Population PyramidLDC DC
Important!
Population pyramid MCQ1. 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 growthB There is high male immigrationC There is higher life expectancy for femalesD 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
3. Which of the following best describes Country B?
A Low birth rate, low death rate, decreasing populationB Low birth rate, high death rate, increasing population C High birth rate, high death rate, decreasing populationD 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 aboveC 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 rateB It has a higher life expectancyC It has a smaller dependent populationD 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
1. What is the total number of people on Earth today?
2. List the top 5 countries with the most number of people.
3. Are there more girls or boys on earth ?
Additional questions1. What is the total number of people on Earth today?
Ans: 6.8 million
2. 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)