Question of the Day 10/8

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Question of the Day 10/8

• Does the developed world have a moral obligation
  to solve population related issues around the
  world?

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Question of the Day 10/8

• Take out your spiral. Do you think the world is
  overpopulated? Why or why not?

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Population Lights

• http//www.youtube.com/watch?v4BbkQiQyaYc

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Introduction to Population

• Cy-Woods HS
• 2013-2014

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Population Growth

• It took until the year 1850 for the world to
  reach one billion people.

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How much is one billion?

• The population of Houston is 2.1 million.
• If you had a million dollars in thousand dollar
  bills, it would be 4.3 inches tall.
• If you had a billion dollars in thousand dollar
  bills, it would be 358 feet tall! (35 stories
  tall)

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How much is one billion?

• It took you 11.6 days to be alive for a million
  seconds.
• It will take you 31.7 years to live for a billion
  seconds.

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How much is one billion?

• In a supersonic airplane, you could travel one
  million miles in 31 days.
• It would take 85 years to travel one billion
  miles in that same airplane.

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Population Growth

• In 2011, the population of the world reached 7
  billion!

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China and India

• China and India are both over 1 billion people.
• China 1.3 billion
• India 1.2 billion
• India is growing faster than China. They should
  catch up by 2050.

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World Clock

• http//www.poodwaddle.com/clocks/worldclock/

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Population
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Population Density

• People live on only 10 of the Earths surface.
• Why?

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Most live in East or South Asia, Europe, and the
Northeastern USA.
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Why do people live in particular areas?

• Moderate climates
• People prefer to live in places not too hot or
  not too cold.

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Why do people live in particular areas?

• Close to water

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Why do people live in particular areas?

• Proximity
• People stay close to where they came from

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Why do people live in particular areas?

• The Industrial Revolution (18th and 19th c.)
• Caused a population shift as people moved from
  rural to urban areas.

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Urbanization

• The dramatic rise in the number of cities and the
  changes in lifestyle that result.
• There are now more people in cities than in rural
  areas.

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Demographic Statistics

• Population density
• The number of people living in a given area.
• U.S. 83 per sq. mi.
• Bangladesh 2,559 per sq. mi.

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Demographic Statistics

• Fertility rate
• the average number of children a woman will have
  in her lifetime.
• Niger 7.68
• U.S. 2.06

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Demographic Statistics

• Rate of Natural Increase (RNI)
• Birth rate - Death rate
• Number of births
• or deaths per
• 1000 people in
• a year.

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Stage 1 Slow Growth

• Population grew very slowly.
• Many children born, but also many die.
• Most people are farmers.
• Growth pattern until the 1700s.

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Stage 2 Rapid Growth LDC

• Hygiene and medical technology increases.
• Lots of babies being born and less are dying.
• Population increases dramatically in wealthy
  countries.
• Now reaching poor countries.

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Stage 3 Slow Growth or No Growth MDC

• Population begins to level off.
• People have less kids as they become wealthier.
• Kids are no longer an asset.
• Immigration is often the only reason they see any
  growth.

The U.S. is in Stage 3
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Stage 4 Negative Growth MDC

• More people are dying than are being born.
• Sometimes incentives given for more children.
  Abortion sometimes illegal.

Japan and most of Europe are in Stage 4
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Overpopulation

• Carrying capacity
• the number of people a region can support
• with minimal
• negative effects
• reached when
• resources available
• can no longer
• support the population.

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Carrying Capacity

• Which has a larger carrying capacity?

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Consumption of the Worlds Resources
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How do we avoid exceeding our carrying capacity?
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Technology!
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4 Minute History of the World

• http//www.youtube.com/watch?vjbkSRLYSojo

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Overpopulation

• http//www.youtube.com/watch?v4BbkQiQyaYc