Download - Class Discussion Tuesday , October 2nd
Class DiscussionTuesday, October 2ndAccording to the UN, world population is expected to grow to 9.2 billion by the year 2050. What challenges do you see if this prediction proves accurate?
After Today…
Students should be able to predict future population trends.
Students will discuss consequences / challenges based upon future population trends.
Students will fully comprehend the 4 phases of the Demographic Transition Model.
Top 10 Countries (Source USA Census Bureau)
China 1.3 Billion
India 1.2 B USA 313 Million Indonesia 246 M Brazil 203 M
Pakistan187 M
Bangladesh159 M
Nigeria155 M
Russia139 M
Japan126 M
Future??? (2050 according to Population Reference Bureau)
India 1.7 Billion
China 1.3 B USA 403 Million Nigeria 390 M Indonesia 293 M
Pakistan 275 M
Brazil 223 M
Bangladesh 194 M
Philippines 155 M
Democratic Republic of the Congo 149 M
Demographic Transition Model Phase #1 – Pre Industrial High Birth Rates High Death Rates Slow Rate of Natural Increase (RNI) Usually associated with poor public
health measures like lack of sanitation.
AKA – Less Developed Countries, 3rd World Countries
Angola source CIA Factbook
Median Age – 18.1
Life expectancy at birth – 38.76
Total fertility Rate – 5.97 children / woman
Demographic Transition Model Phase #2 – Transitional High Birth Rates Death Rates Fall (Higher Life
expectancies) Rapid Rise in the RNI Associated with improved economic
and social conditions
India
Median Age – 26.5 years
Life expectancy at birth – 67.14 years
Total Fertility Rate – 2.58 children per woman
Demographic Transition Model Phase #3 – Transitional Birth Rates Begin to Fall rapidly Death Rates Fall slightly RNI begins to level off In an urbanized and industrial
society people begin to see the benefits of smaller families.
Demographic Transition Model Phase #4 – Industrial Low Birth Rates Low Death Rates RNI is relatively flat or even in slight
decline Usually associated with highly
industrialized and highly urbanized countries.
Japan
Median Age – 44.8
Life expectancy at birth – 82.25
Total fertility Rate – 1.21 children / woman
Urbanization
Migration of people from rural areas to urban areas.
Growth of cities. Currently about 50% of the world’s
population lives in urban areas. This number is increasing at a rapid
rate throughout the entire world.
Taking the subway…
Everybody in the pool…
Overurbanization
When the urban population grows more quickly than support services such as housing, transportation, waste disposal and water supply
Fairly common in 3rd World Countries
Thomas Malthus English economist,
Malthus is best known for his hugely influential theories on population growth.
Believed that populations would eventually expand beyond their capability to feed themselves.
Population correction
Norman Borlaug
Founding Father of the Green Revolution.
Worked with Mexican scientist and farmers to increase wheat production.
His work has helped to prevent widespread starvation in many parts of the world.
Developed Countries
Also sometimes called “1st world countries”.
Characterized by high economic development and low Birth Rates
Core countries often found in the Northern Hemisphere
Developing Countries
Also sometimes called 3rd world countries.
Characterized by low economic development and high Birth Rates
Periphery countries often found in the Southern Hemisphere
Squatter Settlements
Illegal developments of makeshift housing on land neither owned nor rented by the inhabitants.
Fairly common in many LDC’s or 3rd World Countries
Favela Makeover
Many of the participants in Brazil’s world famous Carnival come from the Favelas.
Read the following article from TIME magazine: http://www.time.com/time/world/article/0,8599,2091817,00.html
After Today…
Students should be able to predict future population trends.
Students will discuss consequences / challenges based upon future population trends.
Students will fully comprehend the 4 phases of the Demographic Transition Model.