Transcript Global Population - Waterloo Region District School Board

POPULATION
ISSUES & PATTERNS
Cartoons
Population Issues & Patterns
Population Issues & Patterns
Population Issues & Patterns
Age structure pyramid comparison
Population Issues & Patterns
Location of people
The World’s population just reached 7 Billion.
Where are the most People?
Africa, Asia,
Europe, The America’s
or Australia?
ASIA has over 50%.
Population Issues & Patterns
A Global Village
If our World was actually a village of 100 people …..
It would have: 58 Asians,
14 Africans,
13 Europeans,
9 Latin Americans,
5 North Americans
1 Weirdo
World Population History #2
(years to add 1 billion people)
Billion
1
2
3
4
5
6
7
Year
1800
1930
1960
1975
1987
1999
2011
# of years
2 million?
130
30
15
12
12
12
Population Issues & Patterns
How is the world’s population total
changing presently?
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The population of earth increases
by about 90 million people/ year
This is calculated by subtracting deaths
from births
That means an increase of
approximately 250,000 per day.
Or about 13,000 in one class period
time of 75 minutes
Population Issues & Patterns
Do some places add more people?
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Can you Guess which world area contributes more
people?
Africa, Asia, Europe, The America’s or Australia?
ASIA – contributes over 2/3 of the population grow
Population Issues & Patterns
Is fast growth a good thing?
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High population and fast growth can cause
problems.
Can you name some global problems that relate?
poverty,
hunger,
deforestation,
global warming, soil erosion, disease,
desertification, habitat loss(extinction),
ozone layer depletion, resource depletion,
global warming, pollution of air and water…..
Population Issues & Patterns
Population Growth
……has 2 parts
Population Increase = NIR + NMR
a) NIR = Natural Increase Rate
b) NMR = Net Migration Rate
NIR = Birth rate – Death Rate
NMR = Incomers – outgoers
(Immigrant rate – Emigrant Rate)
Population Terminology
Rich and Poor
More Developed countries (MDC’s) (Rich)
20% of world population
create 80% of the pollution in the world
LDC’s (Lesser Developed Countries) (poor)
80% of the worlds people are now getting
technology and starting to industrialize
As LDC’s develop and begin to consume resources
like MDC’s, environmental problems will explode.
Population Issues & Patterns
Yellow countries are considered LDC’s.
Population Issues & Patterns
Census: Is a counting of the people
a) is a count of a country’s population
b) It is recorded in Years ending in a 1 or a 6
QUESTIONS: What types of people might be
missed in a Canadian Census?
How might people in other
countries might NOT be counted?
Population Issues & Patterns
How Does Canada’s Population
change on an average day?
1070 people are born
610 immigrants arrive
575 people die
135 people emigrate
…..we gain about
970 people per day
If Canada only grew by births and deaths
Canada would have an increase rate of
6.2 /1000 or
0.62 %
DOUBLING TIME = NUMBER OF YEARS
TO DOUBLE IN SIZE
THE RULE OF 70 calculates doubling time
70 divided by
% increase
70 / 0.62
=
=
# of years to double
113 years
Population Issues & Patterns
1st, 3rd or 5th World
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First world = low birth rates and
low death rates
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Third World = high birth rates
and low death rates
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Fifth World = high birth rates and
high death rates
Demographic Transition
Patterns based on Birth and death rates.
Countries progress through “stages” over time.
Countries move from being a fifth world country to
a third world country and then first world country
The change through these stages is called…
DEMOGRAPHIC TRANSITION
All countries are at some
place in this transition.
Population Issues & Patterns
Canadian Age Groups
in society today
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Baby Boomer Age 48 to 64 – born 1946 - 1962
Generation X Age 30 to 47 – born 1963 – 1980
Echo Boom Age 17 to 29 – born 1981 – 1993
Echo X
Age 0 to 16 – born 1994 – present
Population Issues & Patterns
Fertility Rates
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TFR = Total Fertility Rate
The number of children
produced per female =
a mathematical number.
2.1 is “replacement or stability”.
Fertility rate
TFR history in Canada
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1930’s = 2.8 (The Depression)
1950’s = 3.9 (The Baby boom)
1960’s = 2.3 (Women’s Liberation)
Presently = 1.5 (Modern Society)
Dependency
WORKERS pay taxes to support Dependents
who don’t pay taxes. This includes the young and old
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Age Groups
WORKER = 17 to 59
Young (YNW) = 16 And under
Old (ONW) = over 60
Total Dependants = YNW + ONW
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Dependency LOAD = ….
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%
the
of the population that is supported
from the taxes of the workers
Dependency Patterns over time
Year Workers YNW ONW
1981
63% 21% 16%
2001
62% 19% 19%
2031
50% 15% 35%
Total Dependency
37%
38%
50%
Q1) How old will you be in 2031?
(21 years from now)……
- There will be an equal number of dependents and workers
Q2) Do you think that you will have pay more
taxes to support dependents in 2031 than
your parents pay now?
Q3) Can you think of any good alternatives?
Think About it
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What IDEAS could the government of Canada
begin NOW to reduce future problems with
increasing total (and increasing Old age)
dependency?
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Can you name a good job choice and a notso-good one based on this information?
Population Issues & Patterns
Population Pyramid
Basically called called AGE – SEX Pyramids
Age groups are by 4 years
One side is PINK and the other is BLUE
Canada has a moving BULGE
“the Baby BOOM Group”
Population Issues & Patterns
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See website from
Canadian Government for
more pyramids
http://www.statcan.gc.ca/ads-annonces/91-520-x/pyra-eng.htm