Population review
Transcript of Population review
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Population Clock
1-2. LDC’s have higher birth, death rates, and much higher infant mortlity rates.
The difference between MDC’s and LDC’s in population
I wonder how much immigration affects population growth in MDC’s
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Take Notes
Population Pyramids
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How can we look at populations?
• Demographers use population pyramids to study the distribution of people across age structures.
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SHAPE: Triangle “The House” Column Reducing Pentagon
Triangle
Super Rapid Population GrowthPoor
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SHAPE: Triangle “The House” Column Reducing Pentagon
House
Still growing due to medical advances, and slowing CBR due to family planning and education of girlsPoor
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SHAPE: Triangle “The House” Column Reducing Pentagon
Column
Slow growth due to education and medical advancesRich
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SHAPE: Triangle “The House” Column Reducing Pentagon
Inverted Pentagon
Zero Growth
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SHAPE: Triangle “The House” Column Reducing Pentagon
Rapid Growth
Sketch Pyramid Shapes
Momentum Growth
Slow Growth
Zero GrowthTFR = 4.0-7.0
TFR = 3.0-3.9
TFR = 2.0-2.2
TFR = 1.9 and below
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Affect of AIDS on population pyramid for South Africa.
Predicted population for 2035, without and with AIDS.With AIDS, looks like a population “chimney.”
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What are the effects of the One-Child Policy today?
3.3 3.1
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China’s Pyramid
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Question of the Day• What challenges will a country face if it has more old people than young?
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Do Now from yesterday
Age DistributionAge, Total % Pop
Country 1: 17% male; 16.9 female children ages 0-9
Country 2: 7.3%male; 7% female children ages 0-9
Different age groups and their % of the population
Total male+female ages 0-9 Country 1 = 17+16.9=33.9%Country 2 has slower pop growth than country 1
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Do Now
Distribution of World Pop
Rectangles showing regional pop change
Asia, Africa: Population increasing
Europe: Population decreasing
Asia, Africa and China’s pop increasing by 2025Europe’s pop will actually decrease by 2025
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Do Now
It took a long time for pop to reach 1 billion
what the carrying capacity of the earth is?
It only takes 12 years to add 1 billion
How long it has taken for population to add 1 billion
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What are the consequences of an aging population?
As the Chinese population gets older, what needs to happen to care for these older people?
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Fill in for China
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What are the effects of the One-Child Policy today?
3.3 3.1
China
MDC but it isn’t.
Due to aging, China will have to increase health care; also need more workers to pay taxes.
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Choose another country from the Data sheet. Bonus for each
pyramid you draw!
5.1 4.9
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Complete this summary statement: Do Now : China has a pyramid in the shape of a ______________________. This is due to the ____ ______ ______ that began about ______________. Chinese women use _________________ and __________________ to only have one child.
Exit Ticket
reducing pentagonone child policy
1979economic incentives
family planning/birth control
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Test Prep Q 1
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Test Prep Q 2
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Test Prep Q 3
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Test Prep Q 4
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Test Prep Q 5
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Test Prep Q 6
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Test Prep Q 7-8
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Test Prep Q 9-10
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Demographic Transition Model - Bi
rths
and
Dea
ths
for e
very
100
0 m
embe
rs o
f pop
ulati
on 40
30
20
10
Stage 1 Stage 2 Stage 3 Stage 4
Shape of Population Pyramids in each stage
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Richest Countries, Zero Growth, TFR 2.0 and lower,
1.5
Reducing PentagonStage 4
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Rich Countries, Slow Growth, TFR 2.1-2.9
ColumnStage 4
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Moving from poor to (middle) (Still growing due to momentum), TFR 3.0-3.9
House (Stage 3
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Poor Countries, Rapid Growth, TFR 4.0-7.0
Triangle Stage 2
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Rapid GrowthCharts that show the percentages of each age group in the total population, divided by gender.
For poorer countries, the chart is shaped like a pyramid. Infant mortality rates are high, life expectancy is shorter.
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Slower Growth due to improved health care, longer life, more educated women having fewer children
TFR = 2.1 or lower. Remember TFR of 2.1 is replacement rate, stable, zero growth
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