Population Geographylobosgeo.weebly.com/.../1/19318683/population_geography.pdf · 2018-10-18 ·...
Transcript of Population Geographylobosgeo.weebly.com/.../1/19318683/population_geography.pdf · 2018-10-18 ·...
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Population Geography
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How many people…
Live in Hays County?
Live in Texas?
Live in the United States?
Live in the World?
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Satellite Monitoring of Artificial LightMake note of the “Developed World”
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1. The LandscapePeople are not distributed equally
across earth’s surface.
World population continues to grow; but at different rates in different regions.
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2. How Do We Measure Growth?Birthrate- the number of live births
per 1000 people.
Mortality rate (death rate)- number of deaths per 1000 people.
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Rate of natural increase-
birthrate – mortality rate =natural increase
21 births – 4 deaths = 17 ppl. pop. increase
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World Population
Growth1999: Population reaches 6 billion
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3. Measuring PopulationsWe use a population pyramid to
analyze population.
Population pyramid- graphic device that shows gender and age distribution of population.
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4. Not Equally Shared....Climate, altitude and access to
water influence where people live.
People are moving to large cities, changing distribution.
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What are some factors which encourage or discourage
population growth?
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5. Why People MovePush factors are when people feel
pushed out of their homeland or region.
Pull factors attract people to go to another land.
Examples.......
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6. Lots of PeoplePopulation density- average
number of people who live in an area.
U.S. 33 people per sq. mile India 389 people per sq. mile
EX.Total Population = Pop. Density
Total Land Area
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7. 7,172,472,426 and Still Growing
Carrying capacity- the number of organisms a piece of land can support.
The level of technology can improve capacity.
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8. Demographic Transition Model DTM is a model of how the size of a population
changes as a country develops its economy.
Pre-Industrial society:
Births and deaths are
roughly balanced.
Developing Country:
Death rates drop due to
improvements in food supply and
sanitation.
S3:Birth rates decline-
access to contraception,
increased wages, urbanization,
increased status of women, education
for children.
S4: Low birth & death
rates.Birth rates may drop below replacement
levels.Death rates may increase due to
lifestyle diseases and aging pop.
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