Population Distribution and Density

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Population Distribution and Density
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Culminating Assessment

• You will investigate the connections between
  various environmental factors, human population
  patterns and other population characteristics.
• Next, you will apply your findings in the
  creation of a map of an imaginary country or
  region which will display the same connections
  between environment and various population
  characteristics.

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Population Concentrations

• Two-thirds of world in the following regions
• East Asia (one-fifth of world)
• China most populous nation
• South Asia (one-fifth of world)
• India second most populous
• Europe (3rd largest concentration)
• Southeast Asia (4th largest concentration)
• Northeastern U.S. and West Africa

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How did these regions get this way?

• Ecumene portion of Earths surface occupied by
  permanent human settlement
• Examine the spread of the ecumene.
• What might be its physical characteristics?
• What might be the physical characteristics of the
  areas outside the ecumene?
• Amend your original hypothesis.

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Sparsely Populated Regions

• Dry Lands
• Wet Lands
• Cold Lands
• High Lands

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Arithmetic Density

• Population divided by total land area
• High arithmetic density can mean two things
• Many people or little land

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Example Malawi and Ecuador

• Population very close (both 13.9 million)
• Total area different (Malawi 118,480 sq. mi.,
  Ecuador 283,560 sq. mi.)
• Malawis density 117 people per sq. mi. VS.
  Ecuadors density 49 people per sq. mi.)
• What does arithmetic density tell us that crude
  population cannot?

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Practice with Arithmetic Density

• Country A Total land area 200,000 sq. mi.
  crude population 800,000. Density? Is Country A
  relatively crowded?
• Country B Density 150 per sq. mi. Crude
  population 6,000. Land area?
• Country C Density 50 per sq. mi. Land area
  200 sq. mi. Population?

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Physiologic Density

• What doesnt arithmetic density tell us about the
  land a population occupies?
• Population divided by total arable land
• Example United States vs. Egypt
• 172 persons per sq. km vs. 2,580 persons per sq.
  km
• What does this mean?
• If Egypts arithmetic density is 75 persons per
  sq. km, what does this tell us about the amount
  of land suitable for agriculture?

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Agricultural Density

• If two countries have similar physiological
  densities, but produce different amounts of food,
  what could account for this?
• Ratio of farmers to arable land
• What can we conclude about technology and/or
  economic conditions if agricultural density is
  low? If its high?

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Practice Quiz

• Arithmetic Density
• U.S. (31 per sq. km) vs. Canada (3 per sq. km)
• Which has either more people or less land?
• Physiologic Density
• India (699 per sq. km) vs. Japan (2,907 per sq.
  km)
• Which puts more pressure on the land to produce
  enough food?

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Practice Quiz cont.

• Agricultural Density
• Netherlands (72 per sq. km) vs. Bangladesh (1,158
  per sq. km)
• Which country has a more efficient agricultural
  system? How can you tell?

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Essential Questions

• Where is the worlds population distributed?
• Why is the worlds population distributed where
  it is?
• What are the consequences of this uneven
  distribution?

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Further Discussion

• Which of the essential questions does arithmetic
  density help us to answer?
• Which measure of density can help us to
  understand why people live where they do?
• What can physiological and agricultural density
  together tell us about a countrys capacity to
  feed its people?

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Application Task

• Consider what possible correlations could exist
  between these measures of density and other
  population statistics.
• In groups of 2-3, use the population statistics
  packets and the maps on my teacher page and on
  the board to formulate at least two new
  hypotheses regarding the possible correlation
  between a measure of density and another
  population statistic.

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Application Task cont.

• For example, is there a correlation between a
  countrys physiological density and its infant
  mortality rate?
• Record your hypotheses, along with your
  explanation as to why these might be correlated
  on your hypothesis worksheet.
• Determine your strongest hypothesis and be ready
  to share with the class.

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Begin your culminating assessment

• Conduct research to test your hypotheses and
  consider how all three connect.
• Use the provided map outlines to create two maps
  of an imaginary country or region either
  environmental and measure of density, or density
  and another population statistic.
• Compose a one-page response explaining what
  correlations, if any, did you discover between
  the three factors.

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Resources

• www.prb.org (Population Reference Bureau)
• https//www.cia.gov/library/publications/the-world
  -factbook/index.html (CIA World Factbook)
• http//www.census.gov/ (Census Bureau)